MSNBC Morning Joe June 4, 2024 11:02:00
Also, a small controversial new study is calling into question one of the vaccine's effectiveness against the delta variant. gabe gutierrez has the latest. >> reporter: as the u.s. sees a thousand new covid infections every hour, a new study suggests that the one shot johnson & johnson vaccine may be less effective against the delta variant. and that the 13 million people who've received it may need a booster. the cdc does not recommend that and the study is facing backlash because it's not been peer reviewed and has a small sample size of 27 people. johnson & johnson said its studies show it ...