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.
RIVM measures much higher levels of tar, nicotine and carbon monoxide in cigarettes Tar, nicotine and carbon monoxide (TNCO) levels measured in accordance with the Canadian Intense (CI) method are at least twice as high as the levels measured in accordance with the prescribed ISO