Antiretroviral therapy and the clinical evolution of human papillomavirus-associated genital lesions in HIV-positive women

The effect of antiretroviral therapy on the natural history of human papillomavirus (HPV)-associated genital lesions was evaluated in 201 human immunodeficiency virus (HIV)-infected women who were followed-up for 1-6 years. Gynecologic examinations were performed every 6-12 months. HPV sequences in cervico-vaginal cells, analyzed by polymerase chain reaction and typed by restriction fragment-length polymorphism analysis, were repeatedly detected in 126 women; 29 had transient HPV infection. Genital lesions were found in 137 patients; prevalence was comparable in women who were receiving different antiretroviral regimens. Regression of low-grade lesions was more prevalent among patients receiving highly active antiretroviral therapy than among those receiving other regimens; high-grade lesions regressed in the majority of cases, regardless of antiretroviral therapy. HPV infection persisted in nearly 80% of the cases. In conclusion, our data show that antiretroviral therapy does not prevent the development of HPV-associated lesions and does not eliminate HPV infection; therefore, early and strict gynecologic follow-up of HIV-infected women is warranted.

Epstein-Barr virus load and immune activation in human immunodeficiency virus type 1-infected patients

BACKGROUND

Patients infected with HIV-1 are at high risk of developing Epstein-Barr Virus (EBV)-related diseases. Chronic immune activation is a hallmark of HIV-1 pathogenesis and may play a role in B-cell stimulation and expansion of EBV-infected cells.

OBJECTIVES

The aim of the study was to define the relationship between parameters of immune activation and EBV load in HIV-1-infected subjects.

STUDY DESIGN

A total of 156 HIV-1-infected patients were studied. EBV types 1 and 2 were quantified on peripheral blood mononuclear cells by multiplex real-time PCR. Plasma levels of cytokines and lipopolysaccharide (LPS) were determined by immunoenzymatic assays. B-cell activation was analyzed by flow cytometry.

RESULTS

EBV-DNA was detected in 114 patients, and in all but 3 was EBV type 1. The median [interquartile] EBV-DNA load was 43[1-151] copies/10(5) PBMC. EBV-DNA load was higher in patients with detectable HIV-1 plasma viremia, despite good immunological status (CD4>500 cells/μl), than in patients with undetectable HIV-1 plasma viremia regardless of immunological status (46[5-136] copies/10(5) cells vs 17[1-56] copies/10(5) cells, p=0.008). Patients with high EBV-DNA load (>median value) had higher levels of LPS and proinflammatory cytokines (IL-6, IL-10 and TNF-α) than patients with low EBV load. Furthermore, percentages of activated B-cells correlated with EBV-DNA load (r(s)=0.754; p<0.001).

CONCLUSIONS

Overall, these findings indicate a strong association between HIV-1 viremia, markers of immune activation and EBV load and suggest that persistence of HIV-1 viremia and immune activation, regardless of peripheral CD4 cell depletion/repopulation, may favor expansion of EBV-infected cells and onset of EBV-related malignancies.

Use of Polylactic Acid Implants to Correct Facial Lipoatrophy in Human Immunodeficiency Virus 1–Positive Individuals Receiving Combination Antiretroviral Therapy

OBJECTIVE

To assess the efficacy, safety, and tolerability of facial injections of polylactic acid for human immunodeficiency virus (HIV) 1-associated facial lipoatrophy, which commonly affects HIV-1-infected patients receiving combination antiretroviral therapy.

DESIGN

A cohort of 50 consecutive HIV-1-infected outpatients with moderate to severe facial lipoatrophy who were receiving antiretroviral therapy were recruited in one institutional center and followed up for 12 months. Patients received the compound subcutaneously at baseline and on days 30, 45, and 60 of the study, for a total of 4 sets of injections; if necessary, 2 additional sets of injections were allowed on days 75 and 90. At enrollment and during follow-up, data on patients' characteristics, facial ultrasonography, and iconography were assessed. Data for 2 questionnaires, on self-perception of severity of facial lipoatrophy and on quality of life measured by the Medical Outcomes Study-HIV, were also obtained.

RESULTS

Polylactic acid injections led to a significant improvement in facial lipoatrophy, confirmed by the patients' facial lipoatrophy self-perception and by the ultrasonographic evaluation. The mean total cutaneous thickness of each cheek increased significantly between baseline and after completing the polylactic acid injection sessions (4.3 mm [range, 2.7-6.2 mm] [P<.001] and 4.4 mm [range, 2.7-6.1 mm] [P<.001] on the right and left cheeks, respectively) and persisted significantly until month 12 of follow-up (3.4 mm [range, 2.3-4.9 mm] [P<.001] and 3.3 mm [range, 1.6-5.0 mm] [P<.001] on the right and left cheeks, respectively). In addition, a significant (P<.01) improvement in overall quality of life was observed between baseline and the end of the study. No patients discontinued treatment because of toxic effects, and subcutaneous micronodules at the site of injection were never observed.

CONCLUSIONS

Polylactic acid injections can be considered an effective, safe, and simple procedure in HIV-related facial lipoatrophy. The overall improvement of quality of life was clearly associated with the correction of lipoatrophy, reflecting the positive effect of this strategy on patient well-being.

Mediastinitis due to cryptococcal infection: a new clinical entity in the HAART era

OBJECTIVES

Highly active antiretroviral therapy (HAART) produces a rapid decline in plasma HIV-1 RNA levels with concomitant immune reconstitution. Probably due to the enhanced immune function, shortly after starting HAART, some latent opportunistic infections precipitated. The aim of this study was to illustrate the results of a survey on Cryptococcus associated mediastinitis occurring after HAART introduction, carried out at a referral centre of Infectious Diseases in the north-east of Italy, between October 1999 and October 2000.

METHODS

All consecutive HIV-positive patients, naive to HIV-protease inhibitor therapy, and diagnosed with culture-proven cryptococcal infection were included in the study. Clinical and immuno-virological parameters before HAART and subsequently for 12 months were evaluated.

RESULTS

Three of five patients were diagnosed with cryptococcal mediastinitis within a median time of 90 days (range, 60-150) after commencing HAART and fluconazole prophylaxis. Diagnosis was established by lymph node biopsy alone. Clinical improvement was documented when systemic anti-fungal therapy was combined with surgical drainage of the suppurative lesions. The role of immune restoration was confirmed by the significant increase in CD4 cell count, the reduction of HIV-RNA to undetectable levels and the prominent inflammatory reactions of lymph nodes.

CONCLUSIONS

Our report suggests that HIV-positive patients with prior cryptococcal systemic infection may present a re-exacerbation of atypical cryptococcosis as a manifestation of immune restoration, even when fluconazole prophylaxis is ongoing.

Clinical characteristics and laboratory biomarkers changes in COVID-19 patients requiring or not intensive or sub-intensive care: a comparative study

BACKGROUND

Identifying risk factors for severe novel-coronavirus disease (COVID-19) is useful to ascertain which patients may benefit from advanced supportive care. The study offers a description of COVID-19 patients, admitted to a general ward for a non-critical clinical picture, with the aim to analyse the differences between those transferred to the intensive (ICU) and/or sub-intensive care (SICU) units and those who were not.

METHODS

This observational retrospective study includes all COVID-19 patients admitted to the Infectious Diseases Unit. Clinical, laboratory, radiological and treatment data were collected. The primary outcome was a composite of need of transfer to the ICU and/or SICU during the hospitalization. Patients who did not require to be transferred are defined as Group 1; patients who were transferred to the ICU and/or SICU are defined as Group 2. Demographic, clinical characteristics and laboratory findings at the 1st, 3rd and last measurements were compared between the two groups.

RESULTS

303 were included. The median age was 62 years. 69 patients (22.8%) met the primary outcome and were defined as Group 2. The overall fatality rate was 6.8%. Group 2 patients were predominantly male (76.8% vs. 55.1%, p < 0.01), had a higher fatality rate (14.5% vs. 3.8%, p < 0,01), had more hypertension (72.4% vs. 44%, p < 0,01) and diabetes (31.9% vs. 21%, p = 0.04) and were more likely to present dry cough (49.3% vs. 25.2%, p < 0.01). Overall, chest X-ray at admission showed findings suggestive of pneumonia in 63.2%, and Group 2 were more likely to develop pathological findings during the hospitalization (72.7% vs. 17.2%, p = 0.01). At admission, Group 2 presented significantly higher neutrophil count, aspartate-transaminase and C-Reactive-Protein. At the 3rd measurement, Group 2 presented persistently higher neutrophil count, hepatic inflammation markers and C-Reactive-Protein. Group 1 presented a shorter duration from admission to negativization of follow-up swabs (20 vs. 35 days, p < 0.01).

CONCLUSIONS

The presence of comorbidities and the persistent observation of abnormal laboratory findings should be regarded as predisposing factors for clinical worsening.

An Integrated Strategy for the Prevention of SARS-CoV-2 Infection in Healthcare Workers: A Prospective Observational Study

Background: Since the beginning of SARS-CoV-2 outbreak, a large number of infections have been reported among healthcare workers (HCWs). The aim of this study was to investigate the occurrence of SARS-CoV-2 infection among HCWs involved in the first management of infected patients and to describe the measures adopted to prevent the transmission in the hospital. Methods: This prospective observational study was conducted between February 21 and April 16, 2020, in the Padua University Hospital (north-east Italy). The infection control policy adopted consisted of the following: the creation of the “Advanced Triage” area for the evaluation of SARS-CoV-2 cases, and the implementation of an integrated infection control surveillance system directed to all the healthcare personnel involved in the Advance Triage area. HCWs were regularly tested with nasopharyngeal swabs for SARS-CoV-2; body temperature and suggestive symptoms were evaluated at each duty. Demographic and clinical data of both patients and HCWs were collected and analyzed; HCWs’ personal protective equipment (PPE) consumption was also recorded. The efficiency of the control strategy among HCWs was evaluated identifying symptomatic infection (primary endpoint) and asymptomatic infection (secondary endpoint) with confirmed detection of SARS-CoV-2. Results: 7595 patients were evaluated in the Advanced Triage area: 5.2% resulted positive and 72.4% was symptomatic. The HCW team was composed of 60 members. A total of 361 nasopharyngeal swabs were performed on HCWs. All the swabs resulted negative and none of the HCWs reached the primary or the secondary endpoint. Conclusions: An integrated hospital infection control strategy, consisting of dedicated areas for infected patients, strict measures for PPE use and mass surveillance, is successful to prevent infection among HCWs.

Cefiderocol-Based versus Colistin-Based Regimens for Severe Carbapenem-Resistant Acinetobacter baumannii Infections: A Propensity Score-Weighted, Retrospective Cohort Study during the First Two Years of the COVID-19 Pandemic

BACKGROUND

A large increase in multi-drug-resistant Acinetobacter baumannii, especially carbapenem-resistant strains, occurred during the first two years of the COVID-19 pandemic, posing important challenges in its treatment. Cefiderocol appeared to be a good option for the treatment of Carbapenem-resistant Acinetobacter baumannii (CR-Ab), but to date, the guidelines and evidence available are conflicting.

METHODS

We retrospectively included a group of patients with CR-Ab infections (treated with colistin- or cefiderocol-based regimens) at Padua University Hospital (August 2020-July 2022) and assessed predictors of 30-day mortality, and differences in microbiological and clinical treatment. To evaluate the difference in outcomes, accounting for the imbalance in antibiotic treatment allocation, a propensity score weighting (PSW) approach was adopted.

RESULTS

We included 111 patients, 68% males, with a median age of 69 years (IQR: 59-78). The median duration of antibiotic treatment was 13 days (IQR:11-16). In total, 60 (54.1%) and 51 (45.9%) patients received cefiderocol- and colistin-based therapy, respectively. Notably, 53 (47.7%) patients had bloodstream infections, while 58 (52.3%) had pneumonia. Colistin was combined in 96.1%, 80.4%, and 5.8% of cases with tigecycline, meropenem, and fosfomycin, respectively. Cefiderocol was combined in 13.3%, 30%, and 18.3% of cases with fosfomycin, tigecycline, and meropenem, respectively. At the baseline, the two treatment groups significantly differed in age (patients treated with colistin were significantly older), the prevalence of diabetes and obesity (more frequent in the group treated with colistin), length of stay (longer in the group receiving cefiderocol), and type of infection (BSI were more frequent in the group receiving cefiderocol). The proportion of patients who developed acute kidney injury was significantly higher in the colistin group. By using PSW, no statistically significant differences emerged for mortality or clinical and microbiological cure between the two groups. No independent predictors were detected for hospital mortality or clinical cure, while for the length of stay, the only selected predictor was age, with a non-linear effect (p-value 0.025 for non-linearity) on the prolongation of hospital stay of 0.25 days (95% CI 0.10-0.39) at increasing ages (calculated over the IQR).

CONCLUSIONS

Cefiderocol treatment did not differ in terms of main outcomes and safety profile from colistin-based regimens. More prospective studies with a larger number of patients are required to confirm our results.

Molnupiravir and Nirmatrelvir/Ritonavir: Tolerability, Safety, and Adherence in a Retrospective Cohort Study

BACKGROUND

Molnupiravir (MOL) and nirmatrelvir/ritonavir (NIR) were recently approved for the early treatment of COVID-19, but real-life data on tolerability, safety, and adverse events (AEs) are still scarce.

METHODS

We conducted a retrospective cohort study including all patients who were prescribed MOL and NIR at the Infectious Diseases Unit of Padua University Hospital, between January and May 2022. Demographic, clinical, and safety variables were recorded.

RESULTS

We included 909 patients, 48.3% males and 95.2% vaccinated against SARS-CoV-2. The median age was 73 (IQR: 62-82) years. MOL and NIR were prescribed in 407 (44.8%) and 502 (55.2%) patients, respectively. Overall, 124/909 (13.6%) patients experienced any AEs following antivirals intake: 98/124 (79%) patients reporting adverse events presented grade 1 AEs, 23/124 (18.5%) grade 2 AEs and 3 (2.5%) grade 3 AEs. Treatment discontinuation was recorded in 4.8% of patients. AEs were significantly higher in women, in patients treated with NIR compared to MOL and in people who were not vaccinated.

CONCLUSIONS

In our real-life setting, AEs were higher than those reported by clinical trials, and were particularly associated with NIR use and with not being vaccinated. Further analyses are needed to better assess safety of oral antivirals and to define which patient's profile may benefit most from MOL and NIR.

96 Week follow-up of HIV-infected patients in rescue with raltegravir plus optimized backbone regimens: a multicentre Italian experience

BACKGROUND

Long term efficacy of raltegravir (RAL)-including regimens in highly pre-treated HIV-1-infected patients has been demonstrated in registration trials. However, few studies have assessed durability in routine clinical settings.

METHODS

Antiretroviral treatment-experienced patients initiating a RAL-containing salvage regimen were enrolled. Routine clinical and laboratory follow-up was performed at baseline, week 4, 12, and every 12 weeks thereafter. Data were censored at week 96.

RESULTS

Out of 320 patients enrolled, 292 (91.25%) subjects maintained their initial regimen for 96 weeks; 28 discontinued prematurely for various reasons: death (11), viral failure (8), adverse events (5), loss to follow-up (3), consent withdrawal (1). Eight among these 28 subjects maintained RAL but changed the accompanying drugs. The mean CD4+ T-cell increase at week 96 was 227/mm(3); 273 out of 300 patients (91%), who were still receiving RAL at week 96, achieved viral suppression (HIV-1 RNA <50 copies/mL). When analyzing the immuno-virologic outcome according to the number of drugs used in the regimen, 2 (n = 45), 3 (n = 111), 4 (n = 124), or >4 (n = 40), CD4+ T-cell gain was similar across strata: +270, +214, +216, and +240 cells/mm(3), respectively, as was the proportion of subjects with undetectable viral load. Laboratory abnormalities (elevation of liver enzymes, total cholesterol and triglycerides) were rare, ranging from 0.9 to 3.1%. The mean 96-week total cholesterol increase was 23.6 mg/dL.

CONCLUSIONS

In a routine clinical setting, a RAL-based regimen allowed most patients in salvage therapy to achieve optimal viral suppression for at least 96 weeks, with relevant immunologic gain and very few adverse events.

Toxic epidermal necrolysis induced by nevirapine therapy: description of two cases and review of the literature

We describe two cases of toxic epidermal necrolysis developed during an antiretroviral therapy regimen containing nevirapine. It seems likely that the poor adherence to the dose escalation regimen of nevirapine has caused this life-threatening disease. A complete and written information on the scheduled antiretroviral therapy is mandatory, above all for individuals coming from developing countries where language barriers have not yet been successfully overcome.

Impact of monotherapy on HIV-1 reservoir, immune activation, and co-infection with Epstein-Barr virus

Objectives

Although monotherapy (mART) effectiveness in maintaining viral suppression and CD4 cell count has been extensively examined in HIV-1-infected patients, its impact on HIV-1 reservoir, immune activation, microbial translocation and co-infection with Epstein-Barr Virus (EBV) is unclear.

Methods

This retrospective study involved 32 patients who switched to mART; patients were studied at baseline, 48 and 96 weeks after mART initiation. Thirty-two patients who continued combined antiretroviral therapy (cART) over the same period of time were included in the study. Markers of HIV-1 reservoir (HIV-1 DNA and intracellular HIV-1 RNA) were quantified by real-time PCR. Markers of T-(CD3⁺CD8⁺CD38⁺) and B-(CD19⁺CD80/86⁺ and CD19⁺CD10^-CD21^lowCD27⁺) cell activation were evaluated by flow cytometry. Plasma levels of microbial translocation markers were quantified by real-time PCR (16S ribosomal DNA and mitochondrial [mt]DNA) or by ELISA (LPS and sCD14). EBV was typed and quantified by multiplex real-time PCR.

Results

At baseline, no differences were found between mART and cART groups. Three (10%) mART-treated patients had a virological failure vs none in the cART group. Levels of HIV-1 DNA, intracellular HIV-1 RNA and EBV-DNA remained stable in the mART group, while decreased significantly in the cART group. Percentages of T- and B-activated cells significantly increased in the mART-treated patients, while remained at low levels in the cART-treated ones (p = 0.014 and p<0.001, respectively). Notably, levels of mtDNA remained stable in the cART group, but significantly rose in the mART one (p<0.001).

Conclusions

Long-term mART is associated with higher levels of T- and B-cell activation and, conversely to cART, does not reduce the size of HIV-1 reservoir and EBV co-infection.

Salvage therapy or simplification of salvage regimens with dolutegravir plus ritonavir-boosted darunavir dual therapy in highly cART-experienced subjects: an Italian cohort

BACKGROUND

Dolutegravir plus darunavir provide a high genetic barrier to HIV-1 resistance and are suitable for simple salvage regimens.

METHODS

All HIV-1-infected subjects treated with dolutegravir plus boosted darunavir dual therapy between March 2011 and September 2015 were included in an observational cohort. Data were collected at baseline and at weeks 4, 12, 24 and 48.

RESULTS

We enrolled 113 subjects. After week 24, one was lost at follow-up, one dropped out for grade 2 elevation of liver enzymes, one died from illicit drug abuse and one from cancer-related sepsis. The mean age was 51, 26.5% were female and 9.7% were non-Caucasian. Twenty had never experienced failure. A total of 99 had reverse-transcriptase (RT) mutations, 87 had protease inhibitor mutations and 12 had integrase strand transfer inhibitor (INSTI) mutations. Viraemic patients declined from baseline to week 24 from 43.4% to 6.2%, the remainder being due to high baseline viraemia or adherence issues. The proportion of subjects with viraemia 1-49 copies/ml remained at 20.4% while those in whom no virus was detected (NVD) increased from 36.3% to 73.5% by week 24. All the 47 subjects who had a 48-week follow-up had <50 copies/ml and 42 (89.4%) had NVD. 18 subjects had reduced sensitivity to darunavir (Stanford median score 15, range 15-40), but none rebounded, 6 having a 24-week and 7 a 48-week follow-up. The median variation in serum creatinine was -0.01 (range +0.2 to -0.21) mg/dl.

CONCLUSIONS

This dual regimen provides a simple salvage regimen and proved safe and effective in this cohort.

Real life use of dolutegravir doravirine dual regimen in experienced elderly PLWH with multiple comorbidities and on polypharmacy: A retrospective analysis

By increasing life expectancy of people living with HIV, the most clinical challenge is managing both drug-to-drug interactions and comorbidities (especially metabolic). Doravirine (DOR), a new non-nucleoside reverse transcriptase inhibitor, recently approved for the treatment of HIV, could be a good companion of dolutegravir (DTG) in a dual regimen for experienced elderly patients with multimorbidity and polypharmacy.We herein report our preliminary experience in a small cohort of elderly patients (>50 years of age) with multimorbidity and on polypharmacy who were switched to DOR/DTG dual regimen and followed-up for 3 months. The study was conducted at the Infectious and Tropical Diseases Unit of Padua University Hospital, Italy.Eighteen patients were included, 72.2% males and 27.8% postmenopausal women, mean age was of 61.3 years (7.6), 50% experienced AIDS events. Switches to DOR and DTG were mainly due to high cardiovascular and metabolic risk (72.2%), and interactions among comedications (50%). Antiretrovirals that subjects were switched off were mostly boosted protease inhibitors 66.7%. We observed a viral suppression among all subjects. Interestingly, we observed a statistically significant reduction in body mass index, body weight and waist circumference, eGFR, and a significant increase in serum creatinine levels. No significant changes in CD4+ T cell count was observed from the baseline. Lipid and fasting glucose values did not change significantly.To the best of our knowledge this is the first experience reporting real-life outcome of switch to DTG + DOR in elderly with multimorbidity and on polypharmacy. From our very preliminary data the dual combination of DTG and DOR could be a good treatment strategy for these subjects. However, our findings need to be validated on a greater number of patients.

Predictors of immune reconstitution inflammatory syndrome associated with Kaposi's sarcoma: a case report

We present here a case of immune reconstitution inflammatory syndrome associated with Kaposi’s sarcoma (KS-IRIS) developed in an AIDS patient two months after initiation of antiretroviral therapy (ART). Baseline characteristics of this IRIS-KS case, within a cohort of 12 naïve AIDS-KS patients, were analyzed. No statistically significant differences in CD4 cell counts, plasma HIV RNA load, KS clinical staging, human herpesvirus 8 (HHV8) antibody titers and HHV8 load in peripheral blood mononuclear cells and saliva were evidenced. HHV8 load in plasma was found to be significantly higher in the KS-IRIS patient (> 6 log₁₀ genome equivalents/ml, p = 0.01, t–test) compared to the 11 patients with KS regression. This case highlights that measurement of HHV8 load in plasma may be useful to identify patients at risk for KS-IRIS, and that this parameter should be included in the design of larger studies to define KS-IRIS risk predictors.

Chemo-Immunotherapy of Advanced Aids-Related Kaposi'S Sarcoma

Aims and background

Kaposi's sarcoma (KS) is the most common neoplastic complication of HIV infection and AIDS. Multiple cytotoxic chemotherapy regimens have been used with various response rates. We have evaluated the efficacy and toxicity of low-dose chemotherapy in patients with poor-prognosis AIDS-related KS and the role of interferon alpha (IFN-α) in complete responders.

Methods

Twenty-five previously untreated patients with advanced KS received bleomycin (BL) 10 mg/m2 and vinblastine (VB) 6 mg/m2 on days 1 and 15 every two weeks. After six cycles, patients in complete remission received IFN-alpha (3 million U s.c. 3 times/week) combined with antiretroviral therapy. All patients were evaluated for toxicity using the World Health Organization (WHO) toxicity schedule. Both Eastern Cooperative Oncology Group (ECOG) and AIDS Clinical Trials Group (ACTG) response criteria were used to evaluate response and survival.

Results

The overall response rate was 84% (95% confidence interval, 51–117%) with six complete remissions (24%) and 15 partial remissions (60%) by ECOG criteria, and 92% (95% confidence interval: 58–128%) with 17 partial remissions (68%) by ACTG criteria. The median duration of response on IFN-alpha treatment was 4.5 months (range, 2–10). The overall median survival duration for all 25 patients was 9 months (range, 2–39). Grade 3–4 anemia was observed in five patients and grade 3–4 neutropenia in two patients. No other clinically significant (> grade 3) toxicities were observed.

Conclusions

Combination of BL and VB is effective and well tolerated, even if new therapeutic options are developing. This disease remains a challenging problem, so larger studies using the combination of chemotherapy and/or IFN-alpha with antiretroviral treatment are warranted.

Risk of hospitalization and sequelae in patients with COVID-19 treated with 3-day early remdesivir vs. controls in the vaccine and Omicron era: a real-life cohort study

BACKGROUND

Recently, a benefit from administration of a 3-day course of early remdesivir (ER) in the outpatients' setting was reported. However, real-life data on its use is scarce. Therefore, we explored the ER clinical outcome in our outpatients' s cohort, compared to untreated controls.

METHODS

We included all patients who were prescribed ER from February to May 2022 and followed them up for three months and compared patients who received treatment with untreated controls. In the two groups the following outcomes were investigated: hospitalization and mortality rate, time of negativization and symptom's resolution, and post-acute COVID-19 syndrome prevalence.

RESULTS

Overall, 681 patients were analyzed, mostly females (53.6%), and with a median age of 66 years (IQR: 54-77), 316 (46.4%) patients received ER, and 365 (53.6%) did not receive antiviral treatment (control group). Overall, 8.5% patients eventually required oxygen support, 8.7% were hospitalized for COVID-19, and 1.5% died. SARS-CoV-2 immunization and ER (aOR 0.049 [0.015; 0.16], p<0.001) independently reduced hospitalization risk. ER was significantly associated with a shorter duration of SARS-CoV-2 positivity at nasopharyngeal swabs (aβ -8.15 [-9.21; -7.09], p<0.001) and of symptoms (aβ -5.11 [-5.82; -4.39], p<0.001), and with lower rate of COVID-19 sequelae compared to control group (aOR 0.18 [0.10;0.31], p<0.001).

CONCLUSIONS

Even in the SARS-CoV-2 vaccination and Omicron era, in patients at high risk of developing severe disease, ER demonstrated to have a good safety profile and to significantly reduce the risk of disease progression and COVID-19 sequelae compared to untreated controls. This article is protected by copyright. All rights reserved.

Epidemiological and Clinical Features of SARS-CoV-2 Variants Circulating between April-December 2021 in Italy

SARS-CoV-2 is constantly evolving, leading to new variants. We analysed data from 4400 SARS-CoV-2-positive samples in order to pursue epidemiological variant surveillance and to evaluate their impact on public health in Italy in the period of April-December 2021. The main circulating strain (76.2%) was the Delta variant, followed by the Alpha (13.3%), the Omicron (5.3%), and the Gamma variants (2.9%). The B.1.1 lineages, Eta, Beta, Iota, Mu, and Kappa variants, represented around 1% of cases. There were 48.2% of subjects who had not been vaccinated, and they had a lower median age compared to the vaccinated subjects (47 vs. 61 years). An increasing number of infections in the vaccinated subjects were observed over time, with the highest proportion in November (85.2%). The variants correlated with clinical status; the largest proportion of symptomatic patients (59.6%) was observed with the Delta variant, while subjects harbouring the Gamma variant showed the highest proportion of asymptomatic infection (21.6%), albeit also deaths (5.4%). The Omicron variant was only found in the vaccinated subjects, of which 47% had been hospitalised. The diffusivity and pathogenicity associated with the different SARS-CoV-2 variants are likely to have relevant public health implications, both at the national and international levels. Our study provides data on the rapid changes in the epidemiological landscape of the SARS-CoV-2 variants in Italy.

Cutaneous manifestations in a series of 417 patients with SARS-CoV-2 infection: epidemiological and clinical correlates of chilblain like lesions

A variety of dermatological lesions have been described in COVID-19, although the prevalence and pathogenic relationship remain unclear particularly for chilblain-like lesions. Dermatological examination was performed in a prospective cohort of consecutive patients seen at the service for SARS-CoV-2 infection. Out of 417 patients with confirmed SARS-CoV-2 infection [median age 29.5 years (range 15-65); 62.5% males], dermatological lesions were detected in 7 (1.7%). Three patients had acral lesions; their age (range) was 15-29 years; all had a negative nasopharyngeal swab and developed IgG and/or IgM-specific antibodies; all presented none or mild symptoms. A fourth patient remained negative at repeated testing; mother, father and sister had a documented mild COVID-19. Non-acral lesions were observed in four older patients, with severe COVID-19. Chilblain-like lesions may be the sole manifestation of SARS-CoV-2 infection; their presence in asymptomatic school children and adolescents should be considered a potential signal of familial or community spread of the virus.