Biotech Values

[jbog]

I'm only assuming but it seems that in 2019 Merck picked some more current sterotypes that were prevalent at the time.

""V116 is specifically designed to address the serotypes that represent adult pneumococcal disease, including eight unique serotypes, 15A, 15C, 16F, 23A, 23B, 24F, 31 and 35B, which account for approximately 30% of adult disease, according to 2019 pre-pandemic CDC data.""