reinfected

Aids is not like flu - each time a person is exposed to HIV they are reinfected, which is why HIV-positive people have to use condoms, particularly if having sex with another HIV positive person.

ANC Daily News Briefing 2003

The rest of the world may be polio-free but because it is a communicable disease and people travel, polio-free countries can become reinfected … this is what we are seeing in western China, Rosenbauer said.

China vaccinates 4.5m people in fight against polio 2011

"Just as China can become reinfected, so can polio-free areas in Pakistan become reinfected."

China vaccinates 4.5m people in fight against polio 2011

Therefore you cannot become reinfected with the hepatitis A virus.

Hepatitis A 2010

Duffy was reinfected by separate mosquito bites, but if an infection is not treated properly right away, the parasite can return weeks or months later.

Volunteers at Walter Reed endure mosquito bites to help find a malaria vaccine Eric Niiler 2010

With the success of the smallpox inoculation, some nineteenth-century doctors thought that the great pox would also be controlled by vaccine, but they soon found that infected people could get reinfected, making the disease unsuitable for that treatment.

MANUFACTURING DEPRESSION Gary Greenberg 2010

When the scientists reinfected the rats and the new wave of nematodes began making eggs, the parasites that emerged from them were more likely to be sexual forms.

Parasite Rex Carl Zimmer 2009

When the scientists reinfected the rats and the new wave of nematodes began making eggs, the parasites that emerged from them were more likely to be sexual forms.

Parasite Rex Carl Zimmer 2009

When the scientists reinfected the rats and the new wave of nematodes began making eggs, the parasites that emerged from them were more likely to be sexual forms.

Parasite Rex Carl Zimmer 2009

Bennett's cream keeps the hands from being reinfected -- for hours.

Britain's Accidental Inventor 2008