By: Giselle Acosta
Human Immunodeficiency Virus, commonly known as HIV, is a virus that attacks cells that help the body fight off infections. It spreads through contact with certain bodily fluids from a person who has HIV. HIV is most commonly spread during unprotected sex (sex without a condom or medicine that prevents or treats HIV) and by sharing injection drug equipment such as needles. There is no cure, but treatments and medicine are available to reduce symptoms and prevent the transmission of HIV to HIV-negative people. If left untreated, HIV can progress into AIDS, which is the last stage of HIV and occurs when the body has suffered major damage from the virus.
Recently, in a big leap of innovation, researchers have started to create an HIV vaccine that can block multiple strains, including some of the hardest to fight. This vaccine helps the body produce bNAbs, or broadly neutralizing antibodies, which can recognize many different strains of HIV. Since HIV mutates rapidly and there are millions of strains, bNAbs are the best way to fight off as many as possible.
To make this vaccine effective, scientists created a two-step strategy. First, they gave two priming vaccines, which made the HIV proteins easier for the immune system to spot by removing some sugar molecules. Then, they gave five booster shots about twelve weeks apart. These boosters contained spike proteins that looked like the ones on HIV from different strains. This helped retrain the immune system to recognize HIV proteins, even if they were partly hidden by sugar molecules.
This long process paid off. Results showed that even the hardest strains, like tier 2, were neutralized. Although this vaccine hasn’t been tested in human trials yet, researchers are confident that the results can be repeated. They were able to isolate a group of antibodies called LJF-0034, which could neutralize around 70% of a global panel of 84 strains. This exciting result gives researchers hope that a future version of the vaccine could be even stronger and more effective.
The HIV vaccine could help doctors fight HIV and stop the epidemic. It could also help prevent new infections and new strains from forming. With less demand for lifelong treatments, hospitals may be able to focus their resources on other needs. Finally, this vaccine could help reduce the stigma around HIV. Instead of focusing on treatment, people can now focus on prevention.
The vaccine gives hope to the 40 million people living with HIV. It offers them a chance to live without the weight and unfair shame that often comes with being HIV-positive. It allows people to go through life without worrying as much about passing HIV to others or needing daily medication. HIV won’t have to control everyday things like sex, breastfeeding, or getting injections anymore. This vaccine could be the new beginning that many people with HIV have been waiting for.
