If you have the shot, you tend to develop immunity to the 23 strains of PPSV vaccine. In case of PCV7 its 7 strains. So you might not contract pneumonia due to these 23 strains if you had got vaccinated
If you have the shot, you tend to develop immunity to the 23 strains of PPSV vaccine. In case of PCV7 its 7 strains. So you might not contract pneumonia due to these 23 strains if you had got vaccinated