The decline in care quality may have been due to staff shortages, a lack of personal protective equipment, and visitor policies that limited family support, the authors say.
The group also used the contaminated milk samples to examine heat treatment and refrigeration impacts.
In 2020 and 2021, COVID-19 was the top cause of death for the region of the Americas.
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Data on novel vaccine candidates in clinical or late preclinical development.
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The Influenza Vaccines R&D Roadmap Initative
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“Where I’d get concerned is if we see genetic changes that allow this virus [H5N1 avian flu] to [easily] attach to the respiratory tract cells of a human."
Study on masks vs N95 respirators for health workers spurs concerns
The findings suggest medical masks may offer similar protection as respirators against COVID-19, but experts say hold on.