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The use of public transport reduces the risk of reinfection: study | India News

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HYDERABAD: People who use public transport and those who perform high-contact jobs have a lower risk of reinfection by Covid-19. This is because a large number of people in these groups have already had the disease and are highly seropositive for the virus.
A study, involving HIV-positive data from 24 cities, including Hyderabad, reveals that only one in four people, who are HIV-positive for Covid, can recall having severe symptoms. In other words, this means that 75% of the people who had Covid-19 did not experience any major suggestive symptoms. They only remembered flu-like symptoms that indicated that most of those affected were unaware they had the virus.
The study involving 10,427 people from across India, including 2,073 staff from the Hyderabad-based Center for Cellular and Molecular Biology, the Indian Institute of Chemical Technology and the National Institute of Geophysical Research, was first published on 19 January and was updated on February 28 in the prepress magazine ‘MedRxiv’.
The study revealed that only 50% of those who were HIV-positive had a fever, while 25% said they had lost their taste and smell. Only about 3% had respiratory problems that required oxygen support at home or hospitalization.
Referring to people who use public transport, the researchers said that this group had approximately 16% seropositivity compared to only 9% in people who use private transport. This means that seropositivity is 20% higher among those who use public transportation compared to people who use personal vehicles. “As shown in our study, the fraction of these recovered subjects with resistance to reinfection was more than doubled among people doing high-contact jobs and using public transportation,” the researchers said.
The team also delved into how Covid affects people with different blood groups. According to the study, people with blood group AB had the highest seroprevalence (10%), which means more prone to infection. Those with blood groups O and A had 7% seropositivity.
People with blood group B have a 36% higher risk of Covid compared to those with other blood groups.

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