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World 26 Feb 2021 | 4:14 PM

AstraZeneca, Sputnik vaccines face hurdles if COVID shots become annual affair

ZURICH (Reuters) - Vaccines from AstraZeneca, Russia's Gamaleya Institute and Johnson & Johnson fight the coronavirus with another virus, leaving scientists concerned the shots may lose potency if annual inoculations become necessary to fight new variants. So-called viral vector shots - also used by several Chinese COVID-19 vaccine developers - use harmless modified viruses as vehicles, or vectors, to carry genetic information that helps the body build immunity against future infections. However, there is a risk that the body also develops immunity to the vector itself, recognising it as an intruder and trying to destroy it.

Philippines 26 Feb 2021 | 7:00 AM

Fake news ‘deadly’ for critics

Lawmaker Sarah Elago faces a daily barrage of Facebook posts linking her to communist rebels trying to overthrow the government. She says the claims are false, but they could get her killed anyway.

AseanPlus News 26 Feb 2021 | 7:00 AM

Fast response gives vaccine makers a head start

BEIJING: When Wu Guizhen and her colleagues at the Chinese Centre for Disease Control and Prevention in Beijing received their first sample of an unknown virus on Jan 2,2020, they rushed to identify it.