HONG KONG, China (AFP) — Existing Covid-19 jabs will struggle against the Omicron variant and it will take months to develop a new shot that works, the head of US vaccine manufacturer Moderna has told the Financial Times. Stephane Bancel told the newspaper in an interview published Tuesday that data would be available on the effectiveness of current vaccines in the next two weeks but scientists were not optimistic. “All the scientists I’ve talked […]