- Sinovac insists its Covid-19 vaccine effective against Delta variant | Malay Mail
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KUALA LUMPUR, July 23 — Sinovac Biotech Ltd, the developer of CoronaVac Covid-19 vaccine, has defended the efficacy of its two-dose vaccine including against the Delta variant. Company spokesperson Liu Peicheng said although no data is available on its protective effect yet, studies have proven...