Generic drugmaker Endo said on Friday it was manufacturing Novavax Inc's experimental COVID-19 vaccine, sending its shares up 10% before the trading bell. The news comes a day after Novavax launched a late-stage trial of the vaccine candidate, NVX‑CoV2373, in the United Kingdom. Endo said it has signed a deal with Novavax and its unit Par Sterile has begun production of the final drug product, with initial batches to be used in Novavax's phase-3 clinical trial in the United States.