Sinopharm vaccine may be less vulnerable to Covid-19 variants, say immunologists<br/><a href="https://www.thenationalnews.com/uae/health/sinopharm-vaccine-may-be-less-vulnerable-to-covid-19-variants-say-immunologists-1.1152392" rel="noreferrer noopener" target="_blank">thenationalnews.com</a>