GOP doc dispenses sketchy medical advice on virus immunity

In this March 18 photo, Sen. Roger Marshall, R-Kan., speaks during a Senate Health, Education, Labor and Pensions Committee hearing on the federal coronavirus response on Capitol Hill in Washington. (AP Photo/Susan Walsh, Pool)

TOPEKA, Kan. — Roger Marshall won’t let people forget he’s a doctor, putting “Doc” in the letterhead of his U.S. Senate office’s news releases. But when he talks about COVID-19 vaccines, some doctors and experts say the Kansas Republican sounds far more like a politician than a physician.