- What study says about the effectiveness of the fourth Covid-19 vaccine shotCNN
- Israeli lawsuit, world first, finds 4th dose 'not good enough' against OmicronThe Times of Israel
- Israeli study shows that 4th shot of COVID-19 vaccine is less effective on OmicronYahoo News
- Israel trials suggest that the 4th dose does not prevent Omicron infectionBloomberg
- Preliminary study in Israel shows that fourth Covid vaccine shot is less effective against omicronCNBC
- See full coverage on Google News