The current smallpox vaccine that contains the vaccinia virus is used only in first responders and military personnel, given the fact that the infection has been eradicated. Scientists have synthesized a horsepox virus which could effectively replace the current vaccinia virus in the smallpox vaccine. The study was published in PLOS ONE.
Infants who have just begun to crawl inhale more dust, dirt from carpeted surfaces. This is because they are close to the floor and inhale a dose of bio-bits in their lungs that is four times (per kilogram of body mass) what an adult would breathe walking across the same floor.
Frequent intake of fast food can cause weight gain and increase the risk of diseases but it is more serious than just a mere weight gain. The body''s immune system reacts similarly to a high fat and high-calorie diet as to a bacterial infection. This is shown by a recent study led by the University of Bonn. Particularly disturbing: Unhealthy food seems to make the body''s defenses more aggressive in the long term.