Depression and stress may reduce efficacy of Covid-19 vaccines
Vaccination doesn`t guarantee 100% protection, wearing mask is must
Covid-19 vaccine can turn people into crocodiles, bearded woman: Brazilian President
Study: Those vaccinated against Covid-19 may still need to wear masks
Study: Dengue antibodies could provide immunity against Covid
First COVID-19 vaccine test on animals successful
The coronavirus vaccine can take 2 years for making it a full-fledged cure
Coronavirus vaccine could be ready in September, Oxford University
"We have a good chance of medical breakthrough or vaccine against Corona virus by April-end"
Study: New vaccine to stop bovine TB developed
Indians uncover vaccine for deadly Zika virus
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