Express Briefing

A team of scientists has identified an anti-cancer drug that kills the coronavirus in lab studies and is almost 30 times more potent than remdesivir, one of the few antiviral drugs available to treat the disease. President Joe Biden on Tuesday announced a "wartime effort" to boost vaccine deliveries and vaccinate 300 million Americans by the end of the summer or early fall.   Listen to today's Express Briefing for a full roundup of San Antonio's top headlines. Subscribe to the San Antonio Express-News to support quality local journalism.