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Miyake MM, Valera FCP, Martins RB, Compagnoni IM, Fantucci MZ, Murashima AAB, da Silva LECM, de Lima TM, de Souza MVO, Melo SR, Dolci RLL, Floriano CG, de Campos CAC, Nakanishi M, Freire GSM, Valente AL, Fornazieri MA, da Silva JLB, Anzolin LK, Issa MJA, Souza TV, Lima BA, SantAnna GD, Abreu CB, Sakano E, Cassettari AJ, Avelino MAG, Goncalves MC, de Camargo LA, Romano FR, Alves RD, Roithmann R, Redeker NK, Filho LLB, Dassi CS, Meurer ATO, Garcia DM, Aragon DC, Tepedino MS, Succar ACS, Vianna PM, Dos Santos MCJ, Filho RHR, Kosugi EM, Villa JF, Gregorio LL, Piltcher OB, Meotti CD, Tamashiro E, Arruda E, Anselmo Lima WT. Smell loss associated with SARS-CoV-2 is not clinically different from other viruses: a multicenter cohort study. Rhinology 2024; 62:55-62. [PMID: 37772802 DOI: 10.4193/rhin23.116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/30/2023]
Abstract
BACKGROUND Although the COVID-19 pandemic has increased the prevalence of cases with olfactory loss, other respiratory viruses can also cause this condition. We aimed to compare the prevalence of acute SARS-CoV-2 infection and other respiratory viruses in patients with sudden smell loss, and to assess the impact of SARS-CoV-2 viral load and co-infection on olfactory symptoms. METHODS Patients with sudden smell loss were recruited in a multicenter prospective cohort study in 15 hospitals in Brazil. Clinical questionnaire, Connecticut Chemosensory Clinical Research Center (CCCRC) olfactory test and nasopharyngeal swab to perform a PCR-based respiratory viral panel were collected at first visit (day 0) and 30 and 60 days after recruitment. RESULTS 188 of 213 patients presented positive test result for SARS-CoV-2, among which 65 were co-infected with other respiratory viruses (e.g., rhinovirus, enterovirus, and parainfluenza). 25 had negative test results for SARS-CoV-2. Patients in both SARSCoV-2 and non-SARS-CoV-2 groups had objective anosmia (less than 2 points according to the psychophysical olfactory CCCRC) at day 0, with no significant difference between them. Both groups had significant smell scores improvement after 30 and 60 days, with no difference between them. Co-infection with other respiratory viruses, and SARS-CoV-2 viral load did not impact olfactory scores. CONCLUSION Patients with sudden smell loss associated with SARS-CoV-2 and other respiratory viruses had similar presentation, with most participants initiating with anosmia, and total or near total recovery after 60 days. SARS-CoV-2 viral load and co-infections with other respiratory viruses were not associated with poorer olfactory outcomes.
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Affiliation(s)
- M M Miyake
- Ribeiro Preto Medical School, University of Sao Paulo, Ribeiro Preto, SP, Brazil and Santa Casa de Sao Paulo School of Medical Sciences, Sao Paulo, SP, Brazil
| | - F C P Valera
- Ribeiro Preto Medical School, University of Sao Paulo, Ribeiro Preto, SP, Brazil
| | - R B Martins
- Ribeiro Preto Medical School, University of Sao Paulo, Ribeiro Preto, SP, Brazil
| | - I M Compagnoni
- Ribeiro Preto Medical School, University of Sao Paulo, Ribeiro Preto, SP, Brazil
| | - M Z Fantucci
- Ribeiro Preto Medical School, University of Sao Paulo, Ribeiro Preto, SP, Brazil
| | - A A B Murashima
- Ribeiro Preto Medical School, University of Sao Paulo, Ribeiro Preto, SP, Brazil
| | - L E C M da Silva
- Ribeiro Preto Medical School, University of Sao Paulo, Ribeiro Preto, SP, Brazil
| | - T M de Lima
- Ribeiro Preto Medical School, University of Sao Paulo, Ribeiro Preto, SP, Brazil
| | - M V O de Souza
- Ribeiro Preto Medical School, University of Sao Paulo, Ribeiro Preto, SP, Brazil
| | - S R Melo
- Ribeiro Preto Medical School, University of Sao Paulo, Ribeiro Preto, SP, Brazil
| | - R L L Dolci
- Santa Casa de Sao Paulo School of Medical Sciences, Sao Paulo, SP, Brazil
| | - C G Floriano
- Santa Casa de Sao Paulo School of Medical Sciences, Sao Paulo, SP, Brazil
| | - C A C de Campos
- Santa Casa de Sao Paulo School of Medical Sciences, Sao Paulo, SP, Brazil
| | - M Nakanishi
- University of Brasilia, Brasilia, DF, Brazil
| | | | - A L Valente
- University of Brasilia, Brasilia, DF, Brazil
| | | | | | - L K Anzolin
- State University of Londrina, Londrina, PR, Brazil
| | - M J A Issa
- Mater Dei Hospital, Belo Horizonte, MG, Brazil
| | - T V Souza
- Mater Dei Hospital, Belo Horizonte, MG, Brazil
| | - B A Lima
- Mater Dei Hospital, Belo Horizonte, MG, Brazil
| | - G D SantAnna
- Santa Casa de Misericordia Hospital de Porto Alegre, Porto Alegre, RS, Brazil
| | - C B Abreu
- Santa Casa de Misericordia Hospital de Porto Alegre, Porto Alegre, RS, Brazil
| | - E Sakano
- State University of Campinas. Campinas, SP, Brazil
| | | | | | | | | | | | - R D Alves
- Hospital Moriah, Sao Paulo, SP, Brazil
| | - R Roithmann
- Lutheran University of Brazil, Canoas, RS, Brazil
| | - N K Redeker
- Lutheran University of Brazil, Canoas, RS, Brazil
| | - L L B Filho
- Hospital Edmundo Vasconcelos, Sao Paulo, SP, Brazil
| | - C S Dassi
- Hospital Edmundo Vasconcelos, Sao Paulo, SP, Brazil
| | - A T O Meurer
- Hospital Edmundo Vasconcelos, Sao Paulo, SP, Brazil
| | - D M Garcia
- Ribeirio Preto Medical School, University of Sao Paulo, Ribeiro Preto, SP, Brazil
| | - D C Aragon
- Ribeirio Preto Medical School, University of Sao Paulo, Ribeiro Preto, SP, Brazil
| | - M S Tepedino
- State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - A C S Succar
- State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - P M Vianna
- State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | | | | | - E M Kosugi
- Federal University of Sao Paulo, Sao Paulo, SP, Brazil
| | - J F Villa
- Federal University of Sao Paulo, Sao Paulo, SP, Brazil
| | - L L Gregorio
- Federal University of Sao Paulo, Sao Paulo, SP, Brazil
| | | | - C D Meotti
- Hospital de Clinicas Porto Alegre, RS, Brazil
| | - E Tamashiro
- Ribeiro Preto Medical School, University of Sao Paulo, Ribeiro Preto, SP, Brazil
| | - E Arruda
- Ribeiro Preto Medical School, University of Sao Paulo, Ribeiro Preto, SP, Brazil
| | - W T Anselmo Lima
- Ribeiro Preto Medical School, University of Sao Paulo, Ribeiro Preto, SP, Brazil
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