The 17th International AIDS Conference in Mexico City runs August 3 to 8, 2008. This year's conference coincided with the startling revelation that the Centers for Disease Control and Prevention had underestimated new HIV cases by 40 percent. Guests: Dr. Ernest Darkoh, Public Health Doctor, 17th International AIDS Conference attendee.
A new CDC study finds that the annual HIV infection rate is higher than previously estimated. The country had roughly 56,300 new HIV infections in 2006 ? about a 40 percent increase from the 40,000 annual estimate used for the past dozen years. What do these new numbers mean for how the community handles AIDS prevention?
Recent studies suggest that male circumcision can provide some protection against HIV infection. Health officials in Uganda would like to promote male circumcision as part of a campaign to reduce HIV/AIDS. But Uganda's president doesn't support the idea
Anchor Katy Clark gets two perspectives on the global battle against malaria: one view is that of Abdullahi Boru, a BBC correspondent who contracted malaria as a teenager; the other view is that of Nils Dauliere
Epidemics have become a hot topic in gaming. In the online video game Pandemic 2, you play the virus, aiming to wipe out humanity. In The Great Flu, you control a world health organization and make decisions about face masks and airport closures.
'The vampire myth, the werewolf myth, and the zombie myth,' Bill Wasik tells Kurt Andersen, 'are all saliva-born infections that manifest as a contagious animal essence. Rabies is the only thing in nature that really acts that way.'
Archaeologists in London have found 13 skeletons that date back 700 years. Historians say as many as 50,000 people died around the year 1348. Name the phenomenon that spread across Europe and re-shaped the human landscape of London.
The Chinese government is reacting to the new outbreak of bird flu with some refreshing transparency. But The World's Mary Kay Magistad in Beijing tells anchor Marco Werman that some Chinese who have questioned official statistics have landed in jail.
Several scientific groups are tracking the global spread of infectious diseases by monitoring Twitter, web searches, and other content online. The World's Rhitu Chatterjee looks at the promise and challenges of disease surveillance via the internet.
Philip Graitcer used to work in Africa as an epidemiologist for the CDC. Recently he returned to Africa as a journalist and met people living with elephantiasis. He shares his thoughts on the patients who remain even when a disease is gone.
Australia's koala population has been hit hard by two rapidly spreading diseases: chlamydia (a sexually transmitted infection) and a retrovirus similar to HIV. Scientists are working to develop vaccines, while lay citizens help care for sick koalas.