In honor of HIV Vaccine Awareness Day, on May 18, let's take a look at some key facts in our current progress toward an HIV vaccine. Our friends at AVAC created the following infographic to highlight some important numbers and figures, including:

• There are currently 35 HIV vaccine trials underway.
• In 2004, we discovered only four broadly neutralizing antibodies. In 2015, we discovered 73 broadly neutralizing antibodies.
• There's $818 million in funding for HIV vaccine research, as of 2013.
• Although we're over 30 years into the HIV epidemic, by comparison, the typhoid vaccine took 105 years to develop.

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Warren Tong is the senior science editor for TheBody.com and TheBodyPRO.com.