A new case-control study of Brazilian healthcare workers (HCWs) suggests as many as 27% developed long COVID after infection, and multiple infections raised the risk. The findings were published today in Infection Control & Hospital Epidemiology.
Experts often cite mistrust of the government as a key reason certain communities have suffered disproportionately during deadly outbreaks, including Ebola and Covid-19. Mistrust is a serious problem in a pandemic if it prevents people from obeying health recommendations, seeking medical care and accepting vaccines.
The researchers used data from 185 countries to estimate that vaccines prevented 4.2 million COVID-19 deaths in India, 1.9 million in the United States, 1 million in Brazil, 631,000 in France and 507,000 in the United Kingdom.
Hybrid immunity from a COVID-19 infection plus a vaccine provided an immune boost against symptomatic disease, as well as severe outcomes, Brazilian researchers found.
The anti-parasitic drug ivermectin, which has surged in popularity as an alternative treatment for Covid-19 despite a lack of strong research to back it up, showed no sign of alleviating the disease, according to results of a large clinical trial published on Wednesday.
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