Open AccessImpact of nonpharmaceutical strategies on trends of COVID-19 in São Paulo State
Author(s) -
Cristiane Ravagnani Fortaleza,
Thomas N. Vilches,
Gabriel Berg de Almeida,
Cláudia Pio Ferreira,
Lenice do Rosário de Souza,
Carlos Magno Castelo Branco Fortaleza
Publication year - 2021
Publication title -
revista de saúde pública/revista de saúde pública
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.857
H-Index - 77
eISSN - 1518-8787
pISSN - 0034-8910
DOI - 10.11606/s1518-8787.2021055003599
Subject(s) - social distance , covid-19 , masking (illustration) , incidence (geometry) , face masks , distancing , environmental health , demography , medicine , sociology , virology , mathematics , art , geometry , disease , pathology , outbreak , infectious disease (medical specialty) , visual arts
Interrupted time series analyses were conducted to measure the impact of social distancing policies (instituted on March 22, 2020) and of subsequent mandatory masking in the community (instituted on May 4, 2020) on the incidence and effective reproductive number of COVID-19 in São Paulo State, Brazil. Overall, the impact of social distancing both on incidence and Rt was greater than the incremental effect of mandatory masking. Those findings may reflect either a small impact of face masking or the loosening of social distancing after mandatory use of masks.