Claim: If you've had two doses of the COVID-19 vaccine and you haven't had a booster jab, then you have a 50/50 chance of ending up in hospital if you catch Omicron.
Fact-check: Is there a 50% chance of hospitalisation with Omicron if you don't get a COVID-19 booster jab? - FactCheckNI
Verdict: claim: if you've had two doses of the covid-19 vaccine and you haven't had a booster jab, then you have a 50/50 chance of ending up in hospital if you catch omicron. conclusion: inaccurate  based on a misinterpretation of data. data published by the uk health security agency at the time of the claim suggested that with two doses, vaccine effectiveness against hospitalisation due to omicron was 52%. however, vaccine effectiveness against hospitalisation is not a measure of hospitalisation rates, it is a measure of how much vaccination reduces the chance that someone will need hospital, compared with having taken no vaccine at all. the data at the time said that, if you've had two vaccine doses but no booster, you would be 52% less likely to require hospital due to omicron compared with if you caught that variant and were unvaccinated.
Organisation: FactCheckNI
Author: Unknown
Date published: 2022-02-28T00:00:00