Co studie říká o účinnosti čtvrtého očkování Covid-19?
![](https://radiog6.cz/wp-content/uploads/2022/01/co-studie-k-o-innosti-tvrt-ho-o-kov-n-covid-19-Roh1eC85jxg.jpg)
What study says about efficacy of fourth Covid-19 vaccine shot
CNN’s Ana Cabrera speaks with Dr. Abdul El-Sayed about new data from an Israeli study on the efficacy of a fourth dose of Covid-19 vaccine while Dr. Paul Offit discusses when the Omicron surge may come to an end in the US. #CNN #News