AstraZeneca COVID-19 vaccine may be ‘ineffective’ if PH fails to contain South African variant: expert<br/><a href="https://news.abs-cbn.com/news/03/03/21/sinovac-appears-to-be-better-than-astrazeneca-in-stopping-south-africa-covid-19-variant-expert-says" rel="noreferrer noopener" target="_blank">abs-cbn.com</a>