Following the explosions on the Nord Stream 1 and 2 pipelines in the Baltic Sea on September 26, 2022, investigators are making new headway with two leads pointing to Ukraine, as reported by Switzerland's Tages-Anzeiger and Germany’s Süddeutsche Zeitung.
However, a recent U.K. community-based population study found that those who have previously been infected with SARS-CoV-2, which causes COVID-19, demonstrate a lower rate of new Omicron BA.4/BA.5 infections compared to those who were vaccinated.