Precaution shots help re-expose bodys immune system to immunising antigen, prevent reinfection - News9 LIVE

Apart from the BA.2 that is a sublineage of the highly contagious Omicron, there are many...

Most people who catch COVID-19 are said to develop a certain amount of immunity that keeps them safe from possible reinfection, at least for about three months to five years, reveals an October 2021 … [+2830 chars]

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