COVID-19 cases are now being identified primarily among unvaccinated individuals, according to data from the US Centers for Disease Control and Prevention (CDC). However, there has been increasing concern about so-called breakthrough infections among fully vaccinated individuals, particularly after the emergence of the SARS-CoV-2 Delta variant.
![COVID-19, sars-cov-2](https://www.promegaconnections.com/wp-content/uploads/2021/12/intranasal-covid-1024x512-1.jpg)
What is a breakthrough infection? The CDC defines it as “the infection of a fully vaccinated person.” The key finding remains that people with breakthrough infections are still far less likely to experience severe COVID-19 symptoms, in contrast with unvaccinated people; hence the importance of vaccination.
Continue reading “COVID-19 Intranasal Vaccines Revisited: Can They Reduce Breakthrough Infections?”