[Aluback]

It's been believed that, like walking and talking, fighting viral infections is something children will develop when they get older. But a U-M study suggests the natural ability to fight infection is there early on.

Scientists learned key cell signals inhibit the growth of essential immune cells early in life. Blocking this signaling could lead to improving an infant's response to infection, according to the study published online ahead of print in Nature Immunity.

"What happens at early age is that natural killer cells, like many other immune cells, do not complete their functional maturation until adulthood," says study senior author Yasmina Laouar, Ph.D., assistant professor in the U-M Department of Microbiology and Immunology.

"During this time we are left with an immature immune system that cannot protect us against infections, the reason why newborns and infants are more prone to infection," she says.

There is a large gap in understanding infant immunity, specifically why the natural killer cell responses are deficient.
Read more at: http://medicalxpress.com/news/2012-0...rowth.html#jCp Infant infection (plastic immune system) is inbuilt...... I wonder why; NOT !!!

I suspect that breast feeding has a lot to do with this
If would be unfortunate if the infant's immune system turned against the mother's input.

Playing without knowing... especially if you are playing with the masses can be unfortunate.

I wonder, what is the percentage of infants that receive years of breast milk today ???

Vaccination is no substitute.