A new study of breakthrough Covid-19 infections finds that vaccines not only reduce the risk of severe disease and hospitalization, but can lower the odds of having long-term Covid-19 symptoms too. It shows that in the minority of people who get Covid despite two jabs, the odds of developing symptoms lasting longer than four weeks are cut by 50%. Vaccination, compared with no vaccination, was associated with reduced odds of Covid-19 hospitalization or having more than five symptoms in the first week of illness following a first or second dose.  The researchers found, and there were reduced odds of long-term symptoms lasting 28 days or more following a second vaccine dose. In terms of the burden of long Covid, it is good news that our research has found that having a double vaccination significantly reduces the risk of both catching the virus and, if you do, developing long-standing symptoms.