... attend. I had to leave early for work so I didn ... />
Marks we made: 1. Circle “Many serious cases”: Defines ... />
i. Vaccine protects only against 1 strain
ii. The strain ... priority.
I only have 1 fresh PT (PT 76) that ... the late 60's and early 70's and got excellent ... even though they are very early (PT 30 - 40?) Does anyone ...