The Scar On The Arm Doing Double Duty
May. 18th, 2010 12:13 am![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png)
Some researchers have found indications that being vaccinated against smallpox makes you less likely to contract HIV. Which isn't a license for doing something stupid, but it's nice to know...