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.
HFC greenhouse gases accumulate in refrigerators and air conditioners Hydrofluorocarbons (HFCs) are potent greenhouse gases used in refrigerators and air conditioners and are released primarily at the end of the life-span of these products.