Chirle de Oliveira Raphaelli, Mario Renato de Azevedo Júnior, Helen Gonçalves, Pedro Curi Hallal
Cross-sectional study on work and health risk behaviors among school students in a rural area of Rio Grande do Sul State, Brazil, 2010
Epidemiologia e servicos de saude : revista do Sistema Unico de Saude do Brasil
university spring break carries twopronged sarscov2 variant transmission risk circulating variants universities spread spring break destinations variants spring break destinations spread universities surrounding communities therefore critical implement sarscov2 variant surveillance testing strategies limit community spread spring break mitigate virus transmission facilitate universities safely returning inperson teaching examined sarscov2 positivity rate changes variant lineages university spring break two consecutive years 155 samples sequenced across four time periods pre postspring break 2021 pre postspring break 2022 following whole genome sequencing samples assigned clades clades paired positivity testing data 50000 samples 2021 number variants observed population increased four nine spring break variants concern responsible cases alpha percent composition increased 222 564 2022 number clades population increased two three omicron sublineage omicron however phylogenetic analysis showed emergence distantly related sublineages 2022 saw greater increase positivity 2021 coincided milder mitigation strategy analysis social media data provided insight student travel destinations travel events may impacted spread show role repetitive testing play transmission mitigation reducing community spread maintaining inperson education identified distantly related lineages brought area spring break travel regardless presence dominant variant concern