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For: Saad NJ, Moek F, Steitz F, Murajda L, Bärnighausen T, Zoller T, Pörtner K, Muller N. A longitudinal study on symptom duration and 60-day clinical course in non-hospitalised COVID-19 cases in Berlin, Germany, March to May, 2020. ACTA ACUST UNITED AC 2021;26. [PMID: 34713798 PMCID: PMC8555372 DOI: 10.2807/1560-7917.es.2021.26.43.2001757] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]

For:	Saad NJ, Moek F, Steitz F, Murajda L, Bärnighausen T, Zoller T, Pörtner K, Muller N. A longitudinal study on symptom duration and 60-day clinical course in non-hospitalised COVID-19 cases in Berlin, Germany, March to May, 2020. ACTA ACUST UNITED AC 2021;26. [PMID: 34713798 PMCID: PMC8555372 DOI: 10.2807/1560-7917.es.2021.26.43.2001757] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]

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Cited by Other Article(s)

Barbieri G, Pizzato M, Gögele M, Giardiello D, Weichenberger CX, Foco L, Bottigliengo D, Bertelli C, Barin L, Lundin R, Pramstaller PP, Pattaro C, Melotti R. Trends and symptoms of SARS-CoV-2 infection: a longitudinal study on an Alpine population representative sample. BMJ Open 2023;13:e072650. [PMID: 37290944 PMCID: PMC10254957 DOI: 10.1136/bmjopen-2023-072650] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 05/18/2023] [Indexed: 06/10/2023] Open

Abstract

OBJECTIVES

The continuous monitoring of SARS-CoV-2 infection waves and the emergence of novel pathogens pose a challenge for effective public health surveillance strategies based on diagnostics. Longitudinal population representative studies on incident events and symptoms of SARS-CoV-2 infection are scarce. We aimed at describing the evolution of the COVID-19 pandemic during 2020 and 2021 through regular monitoring of self-reported symptoms in an Alpine community sample.

DESIGN

To this purpose, we designed a longitudinal population representative study, the Cooperative Health Research in South Tyrol COVID-19 study.

PARTICIPANTS AND OUTCOME MEASURES

A sample of 845 participants was retrospectively investigated for active and past infections with swab and blood tests, by August 2020, allowing adjusted cumulative incidence estimation. Of them, 700 participants without previous infection or vaccination were followed up monthly until July 2021 for first-time infection and symptom self-reporting: COVID-19 anamnesis, social contacts, lifestyle and sociodemographic data were assessed remotely through digital questionnaires. Temporal symptom trajectories and infection rates were modelled through longitudinal clustering and dynamic correlation analysis. Negative binomial regression and random forest analysis assessed the relative importance of symptoms.

RESULTS

At baseline, the cumulative incidence of SARS-CoV-2 infection was 1.10% (95% CI 0.51%, 2.10%). Symptom trajectories mimicked both self-reported and confirmed cases of incident infections. Cluster analysis identified two groups of high-frequency and low-frequency symptoms. Symptoms like fever and loss of smell fell in the low-frequency cluster. Symptoms most discriminative of test positivity (loss of smell, fatigue and joint-muscle aches) confirmed prior evidence.

CONCLUSIONS

Regular symptom tracking from population representative samples is an effective screening tool auxiliary to laboratory diagnostics for novel pathogens at critical times, as manifested in this study of COVID-19 patterns. Integrated surveillance systems might benefit from more direct involvement of citizens' active symptom tracking.

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Humer E, Keil T, Stupp C, Schlee W, Wildner M, Heuschmann P, Winter M, Probst T, Pryss R. Associations of Country-Specific and Sociodemographic Factors With Self-Reported COVID-19-Related Symptoms: Multivariable Analysis of Data From the CoronaCheck Mobile Health Platform. JMIR Public Health Surveill 2023;9:e40958. [PMID: 36515987 PMCID: PMC9901499 DOI: 10.2196/40958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 11/07/2022] [Accepted: 12/13/2022] [Indexed: 12/15/2022] Open

Abstract

BACKGROUND

The COVID-19 symptom-monitoring apps provide direct feedback to users about the suspected risk of infection with SARS-CoV-2 and advice on how to proceed to prevent the spread of the virus. We have developed the CoronaCheck mobile health (mHealth) platform, the first free app that provides easy access to valid information about the risk of infection with SARS-CoV-2 in English and German. Previous studies have suggested that the clinical characteristics of individuals infected with SARS-CoV-2 vary by age, gender, and viral variant; however, potential differences between countries have not been adequately studied.

OBJECTIVE

The aim of this study is to describe the characteristics of the users of the CoronaCheck mHealth platform and to determine country-specific and sociodemographic associations of COVID-19-related symptoms and previous contacts with individuals infected with COVID-19.

METHODS

Between April 8, 2020, and February 3, 2022, data on sociodemographic characteristics, symptoms, and reports of previous close contacts with individuals infected with COVID-19 were collected from CoronaCheck users in different countries. Multivariable logistic regression analyses were performed to examine whether self-reports of COVID-19-related symptoms and recent contact with a person infected with COVID-19 differed between countries (Germany, India, South Africa), gender identities, age groups, education, and calendar year.

RESULTS

Most app users (N=23,179) were from Germany (n=8116, 35.0%), India (n=6622, 28.6%), and South Africa (n=3705, 16.0%). Most data were collected in 2020 (n=19,723, 85.1%). In addition, 64% (n=14,842) of the users were male, 52.1% (n=12,077) were ≥30 years old, and 38.6% (n=8953) had an education level of more than 11 years of schooling. Headache, muscle pain, fever, loss of smell, loss of taste, and previous contacts with individuals infected with COVID-19 were reported more frequently by users in India (adjusted odds ratios [aORs] 1.3-8.3, 95% CI 1.2-9.2) and South Africa (aORs 1.1-2.6, 95% CI 1.0-3.0) than those in Germany. Cough, general weakness, sore throat, and shortness of breath were more frequently reported in India (aORs 1.3-2.6, 95% CI 1.2-2.9) compared to Germany. Gender-diverse users reported symptoms and contacts with confirmed COVID-19 cases more often compared to male users.

CONCLUSIONS

Patterns of self-reported COVID-19-related symptoms and awareness of a previous contact with individuals infected with COVID-19 seemed to differ between India, South Africa, and Germany, as well as by gender identity in these countries. Viral symptom-collecting apps, such as the CoronaCheck mHealth platform, may be promising tools for pandemics to support appropriate assessments. Future mHealth research on country-specific differences during a pandemic should aim to recruit representative samples.

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Pan D, Williams CM, Decker J, Fletcher E, Sze S, Assadi S, Haigh R, Saleem B, Nazareth J, Garton NJ, Pareek M, Barer MR. Exhaled SARS-CoV-2 RNA viral load kinetics measured by facemask sampling associates with household transmission. Clin Microbiol Infect 2023;29:254.e1-254.e6. [PMID: 35843566 PMCID: PMC9281452 DOI: 10.1016/j.cmi.2022.07.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 06/06/2022] [Accepted: 07/07/2022] [Indexed: 02/07/2023]

Domènech-Montoliu S, Puig-Barberà J, Pac-Sa MR, Vidal-Utrillas P, Latorre-Poveda M, Del Rio-González A, Ferrando-Rubert S, Ferrer-Abad G, Sánchez-Urbano M, Aparisi-Esteve L, Badenes-Marques G, Cervera-Ferrer B, Clerig-Arnau U, Dols-Bernad C, Fontal-Carcel M, Gomez-Lanas L, Jovani-Sales D, León-Domingo MC, Llopico-Vilanova MD, Moros-Blasco M, Notari-Rodríguez C, Ruíz-Puig R, Valls-López S, Arnedo-Pena A. Complications Post-COVID-19 and Risk Factors among Patients after Six Months of a SARS-CoV-2 Infection: A Population-Based Prospective Cohort Study. EPIDEMIOLOGIA 2022;3:49-67. [PMID: 36417267 PMCID: PMC9620887 DOI: 10.3390/epidemiologia3010006] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 01/12/2022] [Accepted: 02/07/2022] [Indexed: 12/14/2022] Open

Affiliation(s)

Salvador Domènech-Montoliu Emergency Service Hospital de la Plana, 12540 Villarreal, Castellon, Spain; (S.D.-M.); (M.L.-P.); (M.S.-U.); (G.B.-M.); (B.C.-F.); (U.C.-A.); (L.G.-L.); (D.J.-S.); (M.D.L.-V.); (C.N.-R.); (R.R.-P.); (S.V.-L.)
Joan Puig-Barberà Vaccines Research Area FISABIO, 46020 Valencia, Spain;
Maria Rosario Pac-Sa Public Health Center, 12003 Castelló de la Plana, Castellon, Spain;
Paula Vidal-Utrillas Health Centers I and II, 12530 Borriana, Castellon, Spain; (P.V.-U.); (A.D.R.-G.); (S.F.-R.); (G.F.-A.); (M.M.-B.)
Marta Latorre-Poveda Emergency Service Hospital de la Plana, 12540 Villarreal, Castellon, Spain; (S.D.-M.); (M.L.-P.); (M.S.-U.); (G.B.-M.); (B.C.-F.); (U.C.-A.); (L.G.-L.); (D.J.-S.); (M.D.L.-V.); (C.N.-R.); (R.R.-P.); (S.V.-L.)
Alba Del Rio-González Health Centers I and II, 12530 Borriana, Castellon, Spain; (P.V.-U.); (A.D.R.-G.); (S.F.-R.); (G.F.-A.); (M.M.-B.)
Sara Ferrando-Rubert Health Centers I and II, 12530 Borriana, Castellon, Spain; (P.V.-U.); (A.D.R.-G.); (S.F.-R.); (G.F.-A.); (M.M.-B.)
Gema Ferrer-Abad Health Centers I and II, 12530 Borriana, Castellon, Spain; (P.V.-U.); (A.D.R.-G.); (S.F.-R.); (G.F.-A.); (M.M.-B.)
Manuel Sánchez-Urbano Emergency Service Hospital de la Plana, 12540 Villarreal, Castellon, Spain; (S.D.-M.); (M.L.-P.); (M.S.-U.); (G.B.-M.); (B.C.-F.); (U.C.-A.); (L.G.-L.); (D.J.-S.); (M.D.L.-V.); (C.N.-R.); (R.R.-P.); (S.V.-L.)
Laura Aparisi-Esteve Carinyena Health Center, 12540 Villarreal, Castellon, Spain;
Gema Badenes-Marques Emergency Service Hospital de la Plana, 12540 Villarreal, Castellon, Spain; (S.D.-M.); (M.L.-P.); (M.S.-U.); (G.B.-M.); (B.C.-F.); (U.C.-A.); (L.G.-L.); (D.J.-S.); (M.D.L.-V.); (C.N.-R.); (R.R.-P.); (S.V.-L.)
Belen Cervera-Ferrer Emergency Service Hospital de la Plana, 12540 Villarreal, Castellon, Spain; (S.D.-M.); (M.L.-P.); (M.S.-U.); (G.B.-M.); (B.C.-F.); (U.C.-A.); (L.G.-L.); (D.J.-S.); (M.D.L.-V.); (C.N.-R.); (R.R.-P.); (S.V.-L.)
Ursula Clerig-Arnau Emergency Service Hospital de la Plana, 12540 Villarreal, Castellon, Spain; (S.D.-M.); (M.L.-P.); (M.S.-U.); (G.B.-M.); (B.C.-F.); (U.C.-A.); (L.G.-L.); (D.J.-S.); (M.D.L.-V.); (C.N.-R.); (R.R.-P.); (S.V.-L.)
Claudia Dols-Bernad Health Center, 12200 Onda, Castellon, Spain;
Maria Fontal-Carcel Health Center, 12600 La Vall d’Uixó, Castellon, Spain;
Lorna Gomez-Lanas Emergency Service Hospital de la Plana, 12540 Villarreal, Castellon, Spain; (S.D.-M.); (M.L.-P.); (M.S.-U.); (G.B.-M.); (B.C.-F.); (U.C.-A.); (L.G.-L.); (D.J.-S.); (M.D.L.-V.); (C.N.-R.); (R.R.-P.); (S.V.-L.)
David Jovani-Sales Emergency Service Hospital de la Plana, 12540 Villarreal, Castellon, Spain; (S.D.-M.); (M.L.-P.); (M.S.-U.); (G.B.-M.); (B.C.-F.); (U.C.-A.); (L.G.-L.); (D.J.-S.); (M.D.L.-V.); (C.N.-R.); (R.R.-P.); (S.V.-L.)
Maria Carmen León-Domingo Villa Fátima School, 12530 Borriana, Castellon, Spain;
Maria Dolores Llopico-Vilanova Emergency Service Hospital de la Plana, 12540 Villarreal, Castellon, Spain; (S.D.-M.); (M.L.-P.); (M.S.-U.); (G.B.-M.); (B.C.-F.); (U.C.-A.); (L.G.-L.); (D.J.-S.); (M.D.L.-V.); (C.N.-R.); (R.R.-P.); (S.V.-L.)
Mercedes Moros-Blasco Health Centers I and II, 12530 Borriana, Castellon, Spain; (P.V.-U.); (A.D.R.-G.); (S.F.-R.); (G.F.-A.); (M.M.-B.)
Cristina Notari-Rodríguez Emergency Service Hospital de la Plana, 12540 Villarreal, Castellon, Spain; (S.D.-M.); (M.L.-P.); (M.S.-U.); (G.B.-M.); (B.C.-F.); (U.C.-A.); (L.G.-L.); (D.J.-S.); (M.D.L.-V.); (C.N.-R.); (R.R.-P.); (S.V.-L.)
Raquel Ruíz-Puig Emergency Service Hospital de la Plana, 12540 Villarreal, Castellon, Spain; (S.D.-M.); (M.L.-P.); (M.S.-U.); (G.B.-M.); (B.C.-F.); (U.C.-A.); (L.G.-L.); (D.J.-S.); (M.D.L.-V.); (C.N.-R.); (R.R.-P.); (S.V.-L.)
Sonia Valls-López Emergency Service Hospital de la Plana, 12540 Villarreal, Castellon, Spain; (S.D.-M.); (M.L.-P.); (M.S.-U.); (G.B.-M.); (B.C.-F.); (U.C.-A.); (L.G.-L.); (D.J.-S.); (M.D.L.-V.); (C.N.-R.); (R.R.-P.); (S.V.-L.)
Alberto Arnedo-Pena Public Health Center, 12003 Castelló de la Plana, Castellon, Spain; Department of Health Science, Public University Navarra, 31006 Pamplona, Navarra, Spain Epidemiology and Public Health (CIBERESP), 28029 Madrid, Spain

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