Unfortunately there's misinformation circulating about this #HIV vaccine study. It's not mRNA but protein, and there's no expectation of efficacy - it's a possible first step on a long road toward persuading B cells to make protective antibodies scripps.edu/news-and-event… @IAVI SARS-CoV-2 spike protein is readily vulnerable to neutralizing antibodies thankfully. But HIV Env protein has a protective cloak of sugar molecules, and mostly only weird-shaped antibodies produced by rare B cells can penetrate the cloak and neutralize HIV.