Vaccinating children may protect those around them but its effectiveness in those over 65 years old is unknown because the evidence for this group is poor.
Their effectiveness in those over 65 years old is unknown because the evidence for this group is poor. Vaccinating children may protect those around them.
Vaccinating children may protect those around them. Their effectiveness in those over 65 years old is unknown because the evidence for this group is poor.
Vaccinating children may protect those around them. Their effectiveness in those over 65 years old is unknown because the evidence for this group is poor.