Dr_Ran · @Dr_Ran
5th Jan 2011 from Twitbird Pro
#vaccine
RT @sciencenewsorg Second chicken pox shot boosts coverage: Follow-up vaccination increases protection to nearly 100 percent http://bit.ly/flQYZK #science
5th Jan 2011 from Twitbird Pro
#vaccine
RT @sciencenewsorg Second chicken pox shot boosts coverage: Follow-up vaccination increases protection to nearly 100 percent http://bit.ly/flQYZK #science