Vaccines Could Make a World Free of Malaria, HIV, Cancer Possible Posted on 04/26/2019 by Cosc This year, during World Immunization Week, the World Health Organization launched the world’s first malaria vaccine. Scientists are also testing a vaccine for HIV, and they are working on vaccines against cancer. VOA’s Carol Pearson has more. … Click to share on Telegram (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on X (Opens in new window)