Yes, it is good news that Bill and Melinda Gates are backing an implant that could prevent HIV. HIV is the virus that causes AIDS, a disease that has killed many people throughout the world. Any advance that promises to prevent people from getting HIV is good news for public health.
With any medical development, there will be risks and dangers. And yet, many HIV sufferers would be willing to 'put up' with medical testing, untested and un-trialled drugs, and the associated dangers. At the moment, a HIV diagnosis is a life sentence, and it is admirable that the Gates' are developing a possible cure.
Anything that can be done to prevent HIV is amazing. This is one disease that is extremely serious and often fatal. Blocking people from contracting it would be a great thing, and Bill and Melinda Gates are great people for wanting to help with this. This is a useful concept that can help to save a lot of lives.
The Gates family has long shown their commitment to helping develop science and technology. It would be amazing if human brain power could eviscerate HIV and eventually AIDS. AIDS has been a problem for several generations, and it would be a proud accomplishment for mankind if scientists could find a way to destroy the disease.