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© Research
Publication : PloS one

First wave COVID-19 pandemic in Senegal: Epidemiological and clinical characteristics.

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in PloS one - 01 Jan 2022

Diarra M, Barry A, Dia N, Diop M, Sonko I, Sagne S, Sarr FD, Talla C, Tall A, Faye J, Diop B, Diagne CT, Gaye A, Diallo A, Mbaye R, Cisse M, Taieb F, Faye O, Lakhe NA, Papa Samba B, Diallo K, Fall NM, Badiane AS, Fortes L, Diop M, Thioub D, Ly AB, Faye O, Seydi M, Bousso A, Sall AA, Loucoubar C

Link to Pubmed [PMID] – 36126041

Link to DOI – 10.1371/journal.pone.0274783

PLoS One 2022 ; 17(9): e0274783

The novel coronavirus disease 2019 (COVID-19) pandemic has spread from China to the rest of the world. Africa seems less impacted with lower number of cases and deaths than other continents. Senegal recorded its first case on March 2, 2020. We present here data collected from March 2 to October 31, 2020 in Senegal.Socio-demographic, epidemiological, clinical and virological information were collected on suspected cases. To determine factors associated with diagnosed infection, symptomatic disease and death, multivariable binary logistic regression and log binomial models were used. Epidemiological parameters such as the reproduction number and growth rate were estimated.67,608 suspected cases were tested by the IPD laboratories (13,031 positive and 54,577 negative). All age categories were associated with SARS-CoV-2 infection, but also patients having diabetes or hypertension or other cardiovascular diseases. With diagnosed infection, patients over 65 years and those with hypertension and cardiovascular disease and diabetes were highly associated with death. Patients with co-morbidities were associated with symptomatic disease, but only the under 15 years were not associated with. Among infected, 27.67% were asymptomatic (40.9% when contacts were systematically tested; 12.11% when only symptomatic or high-risk contacts were tested). Less than 15 years-old were mostly asymptomatic (63.2%). Dakar accounted for 81.4% of confirmed cases. The estimated mean serial interval was 5.57 (± 5.14) days. The average reproduction number was estimated at 1.161 (95%CI: 1.159-1.162), the growth rate was 0.031 (95%CI: 0.028-0.034) per day.Our findings indicated that factors associated with symptomatic COVID-19 and death are advanced age (over 65 years-old) and comorbidities such as diabetes and hypertension and cardiovascular disease.