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Indian study finds big drop in COVID antibodies within four months of vaccination

Waning antibodies do not necessarily mean that immunised people lose their ability to counter the disease, as the body’s memory cells may still kick in to offer substantial protection, said the director of a state-run institute that did the study.

“After six months, we should be able to tell you more clearly whether and when a booster would be needed,” Sanghamitra Pati of the Regional Medical Research Centre, based in the eastern city of Bhubaneswar, told Reuters on Tuesday.

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Nicaragua gov’t squeezes doctors, talk of ‘health terrorism’

As international health organizations warn of increasing infections in Nicaragua and independent Nicaraguan doctors call for a voluntary quarantine to slow the spread of the delta variant of the coronavirus, the government has made clear that comments out of step with its line are unacceptable as President Daniel Ortega seeks a fourth consecutive term.

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Immunized but banned: EU says not all Covid vaccines equal

Although AstraZeneca vaccine produced in Europe has been authorized by the continent’s drug regulatory agency, the same shot manufactured in India hasn’t been given the green light. EU regulators said AstraZeneca hasn’t completed the necessary paperwork on the Indian factory, including details on its production practices and quality control standards.

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COVID-19: further lockdowns unlikely but some winter restrictions are possible

The drop and levelling off may be due, in part, to the school summer holidays, as previously noted. The risk now is that infection rates could rise again from their already high levels due to a gradual increase in social contact, including through schools returning and possibly from more parents and other adults returning to workplaces.

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