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Mixing AztraZeneca and Pfizer Covid vaccines produces strong immune response: Study
How well your immune system works can depend on the time of day
Delay in second shot of Pfizer vaccine boosts immunity in elderly by over 3 times: Study
After black fungus, ‘white fungus’ cases pose new challenge amid Covid wave
Fact Check: Can drinking tea prevent COVID-19?
Past COVID-19 infection does not fully protect young people against reinfection: Lancet study
Vitamin D inexpensive, low-risk and can strengthen immune response to COVID-19: experts
COVID-19 immunity lasts at least 8 months, hope for longevity of vaccinations: Study
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