Less than 10% of people infected with the novel coronavirus in Brazil were asymptomatic and the majority of those who tested positive for the COVID-19 respiratory disease had mild symptoms, a survey of almost 90,000 people from all regions showed on Thursday.
According to the epidemiological research funded by Brazil’s Health Ministry and carried out by the Federal University of Pelotas in the southern state of Rio Grande do Sul, people who tested positive for the virus showed five main symptoms: fever, cough, alteration of smell/taste, body pain and headache.
“The literature has become accustomed to saying that most patients are asymptomatic. Our study suggests that most patients have mild symptoms, but are not asymptomatic,” Pedro Hallal, professor at the Federal University of Pelotas and coordinator of the research, said at a news conference. The survey also corroborates some experts’ claims that the outbreak in Brazil is much larger than the official figures suggest, with the difference between the number of confirmed cases and the percentage of the population with antibodies as much as six times in the areas surveyed.
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