Previously, we have seen countries gaining herd immunity against H1N1 virus through vaccination or through direct exposure. The same can also be... ...
https://economictimes.indiatimes.com/news/politics-and-nation/all-you-need-to-know-about-herd-immunity-from-coronavirus/slideshow/80687531.cmsScientists developed vaccines less than a year after COVID-19 was identified, a reflection of remarkable progress in vaccine technology. But... ...
https://economictimes.indiatimes.com/news/international/world-news/five-past-coronavirus-vaccine-drives-and-how-they-worked/articleshow/80621213.cmsThe pharma company has developed detailed logistical plans and tools to support effective vaccine transport, storage, and temperature monitoring.... ...
http://www.rediff.com/news/report/covid-how-pfizer-plans-to-resolve-cold-storage-issues/20201207.htm