Univariate and multivariate risk factors analysis according to "symptomatic/asymptomatic" status for Period 2 (from June 26 to October 31^st, 2020).

(DOCX)</p

Spatial distribution of COVID-19 positive cases at district level.

Spatial distribution of COVID-19 positive cases at district level.</p

S2 File -

(ZIP)</p

Univariate and multivariate risk factors analysis according to "uninfected/infected" status for Period 1 (from March 2 to June 25,2020).

(DOCX)</p

Epidemiological parameters comparison according to different periods.

Epidemiological parameters comparison according to different periods.</p

Heatmap of symptom frequency and histogram of asymptomatic patients by age group.

A. Heatmap of symptom frequency by age group. Symptoms are listed in rows and age groups in columns. Values in cells indicate the frequency of patients from the corresponding age group manifesting the corresponding symptom. The more the red color is accentuated, the more the symptom is frequent. The blue box targets the "cough" symptom, one of the most involved symptoms in transmission due to the dispersed micro-droplets. This symptom is less frequent in young patients (most active sub-population) compared to adult (less active sub-population). B. Histogram of asymptomatic patients by age group. Black vertical bars represent the standard errors.</p

Confirmed COVID-19 cases according to their travel history.

A. Histogram of COVID-19 cases with and without travel history. Dates of onset are represented in the x-axis and number of tested cases on the y-axis. Grey part of the bars represents cases without travel history, black bars cases circulated inside Senegal, green bars cases from the rest of the world, red bars cases from Europe and blue bars cases from other African countries. B. Country’s origin of imported COVID-19 cases.</p

Univariate and multivariable factors analysis according to "symptomatic/asymptomatic" status.

Univariate and multivariable factors analysis according to "symptomatic/asymptomatic" status.</p

Cumulative incidence of COVID19 in Senegal by region.

(DOCX)</p

Distribution of serial interval.

(DOCX)</p