What the Omicron Wave is Revealing About Human Immunity

SARS-CoV-2 has given scientists a plethora of vaccines to evaluate. The response after the Johnson & Johnson vaccine, for instance, elicits a weaker immune response than the mRNA vaccines initially, “and then it actually starts to get better over time,” says Deepta Bhattacharya, PhD, a professor and immunologist at the College of Medicine – Tucson.