Work on liver cancer prevention has focused primarily on preventing infection with hepatitis B by vaccination.
Application of the protocol for prevention of vertical transmission of HIV clearly focuses on preventing infection of the newborn child.
But preventing infection is proving more difficult.
The vaccine halves the risk of cervical cancer by preventing infection by two types of HPV.
In clinical trials, the vaccine, which is targeted against seven of the most common strains of pneumococcus, proved 100percentt effective in preventing infection with those strains, and 90percentt effective in preventing infection with all strains, the agency said.
Many researchers agree that at least for now, the goal of preventing infection may be out of reach.
As at other hospitals experimenting with rigorous controls, the Pittsburgh veterans hospital has found that preventing infection is cost-effective.
Sulfonamides are still used, but largely for treating urinary tract infections and preventing infection of burns.
Also, most men here are circumcised and there has been speculation in the Philippines and elsewhere that this could be a factor in preventing infection.
The Centers for Disease Control and Prevention has permission from the Food and Drug Administration to use the vaccine in experiments in preventing infection and treating patients.
In the past, Tamiflu has been approved for preventing infection in people ages 13 and older and for treating the infection in anyone 1 year old and older.
