The WHO's TAG-CO-VAC recommends updating COVID-19 vaccine antigens to monovalent LP.8.1 to better target circulating SARS-CoV-2 variants, while noting that existing JN.1 lineage vaccines remain suitable. Ongoing surveillance and data collection are emphasized to adapt vaccine strategies as the virus evolves.
Recent health updates include a high yellow fever risk in the Americas with increased cases outside the Amazon, a human H5N1 case in China likely imported from Vietnam, Moderna's filing for an updated COVID vaccine targeting the LP.8.1 sublineage, a study suggesting that rubella vaccination in 19 countries could prevent nearly 1 million CRS cases by 2055, and WHO monitoring the emerging SARS-CoV-2 NB.1.8.1 variant, which shows limited immune evasion and is under close observation.
A new study published in The Lancet compares post-COVID manifestations caused by the SARS-CoV-2 wild-type, Alpha, and Delta variants among unvaccinated and vaccinated populations. The study included almost 10,000 people with long COVID, and neither a lower prevalence nor duration of post-COVID symptoms was observed between vaccinated and unvaccinated individuals. The study findings can be generalized, as this study was conducted in a large sample covering a wide spectrum of post-COVID symptoms.