Fig. 1.

Number of different viral pathogens detected in (a) January–December 2019, (b) January–December 2020 and (c) January–October 2021. The pink area highlights the three periods of five months (May–September) with the highest temperature, and the white area highlights the months with the lowest temperature (January–April and October–December). Between April 2020 and April 2021, the number of tests was lower than in the other periods due to the limited number of outpatients admissions with the clinical characteristics described in the text. Note the different scale of the y axis in (c) compared to (a) and (b)