RIVM launches study on long-term effectiveness of COVID-19 vaccines RIVM is launching an extensive study today to research the long-term effectiveness of the various COVID-19 vaccines in the Netherlands.
How to distinguish a dual user from an exclusive e-cigarette user RIVM and Maastricht University have identified a combination of factors that can be used to distinguish between exclusive e-cigarette users (vapers) on the one hand and people who smoke both regula