3 ms·
The vaccines are 90% effective against the original strain and Alpha to transmission / infection. Efficacy dropped to 60% vs Delta, and drops again to 30% vs O
by dragontamer 5y ago
The vaccines are 90% effective against the original strain and Alpha to transmission / infection.
Efficacy dropped to 60% vs Delta, and drops again to 30% vs Omicron. Boosters seem to rise back up to 90% vs Delta and 75% vs Omicron.
That's why so many people are talking about boosters: it has a measurable impact on transmission for Omicron (and Delta).