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Bangkok Post
Bangkok Post
National

Covid antibodies offer weak defence against fast-spreading BA.5 sub-variant

Supakit Sirilak Covid-19 Department of Medical Sciences Omicron Sinovac
Elderly people arrive for Covid-19 vaccination at Bang Sue Grand Station in Bangkok on Sunday as health authorities warn that the newly discovered BA.5 - now the dominant sub-variant of the disease - better eludes antibodies, making booster shots necessary for vulnerable groups of people. (Photo: Wichan Charoenkiatpakul)

Antibodies are less effective in protecting people from the stronger, now-dominant BA.5 sub-variant of Covid-19, according to the Department of Medical Sciences.

Dr Supakit Sirilak, director-general of the department, said on Monday the laboratory examination of blood from people who had received three doses of Covid-19 vaccines showed their antibodies were less effective in preventing infection with BA.5 compared with the BA.2 sub-variant.

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