Wearing duration of respiratory protectors for COViD-19 in slaughterhouses/ Duracao do uso dos protetores respiratorios para COVID-19 em frigorificos

The work in the production of animal protein in slaughterhouses involves the exposure to several occupational risk factors. At present, it has been recently associated with the pandemic context related to the biological agent severe acute respiratory syndrome coronavirus (SARS-CoV-2). The slaughterhouse sector has been shown to be a critical focus of concentration and spread of cases in Brazil and worldwide. Among the strategies adopted for worker's protection, there is a clear need for collective protection, supplemented by individual protection. With regard to SARS-CoV-2 and to the risk for coronavirus disease (COVID-19), respiratory protection is essential and well-established by the competent agencies and by the scientific community, since the respiratory route is considered the route of transmission and of risk of contagion. The aim of this review was to analyze the indication of use with regard to the frequency for changing respiratory protectors when working at slaughterhouses. The study involved a literature review, conducted on databases available on the internet. The search considered journal articles, dissertations, and theses published in Portuguese and English on scientific data bases from 2006 to 2020. Based on this review, it was possible to show that, in slaughterhouses, especially due to temperature and humidity conditions, facial respirator masks should be discarded after each work shift. Keywords : COVID-19; slaughterhouses; individual protection equipment; PFF-2; mask. O trabalho de p roducao de proteina animal em frigorifico ocorre com a exposicao a varios fatores de riscos ocupacionais. No momento atual, associa-se a isso o periodo recente do contexto pandemico relacionado ao agente biologico SARS-CoV-2. O setor frigorifico tem demonstrado ser foco critico de concentracao e difusao de casos no Brasil e no mundo. Dentro das estrategias adotadas para a protecao dos trabalhadores, ha evidente necessidade de protecao coletiva, complementada pela protecao individual. Em relacao ao SARS-CoV-2 e ao risco da doenca COVID-19, a protecao respiratoria e essencial e firmada de forma consolidada pelos orgaos competentes e pela comunidade cientifica, ja que a via respiratoria e considerada forma de transmissao e de risco de contagio. O objetivo desta revisao foi analisar a indicacao de uso quanto a frequencia de troca de protetores respiratorios no trabalho em frigorificos. O estudo envolveu uma revisao de literatura, realizada em bases de dados di