The mRNA vaccines by Pfizer and Moderna contain genetic instructions for our cells to make the spike protein of the SARS-CoV-2, which the virus uses to infect and enter the human cells.
Even a single dose of the mRNA vaccines can reduce the risk of infection by 81 per cent. These estimates included symptomatic and asymptomatic infections.
The woman, who has been breastfeeding the baby exclusively, received the second dose of the vaccine as per the normal 28-day vaccination protocol timeline.
According to the Biden-Harris transition team, Harris was vaccinated on Tuesday by Patricia Cummings, a clinical nurse manager at the United Medical Center.
The European Union is under massive pressure to approve potential vaccines after Britain and the United States began rolling out a drug produced by Pfizer and BioNtech.
Moderna, whose results stem from a clinical trial of more than 30,000 participants, expects to have approximately 20 million doses ready to ship in the United States by year-end.