President Biden’s planned rollout of additional COVID-19 vaccine doses is set to begin next week, but questions remain about who should get them.

The vaccines remain protective against serious disease and death.

The milestone marks the first fully-approved COVID-19 vaccine in the United States.

As a result of massive summer gatherings in and around Cape Cod, hundreds of vaccinated people tested positive for COVID-19 with viral titers similar to unvaccinated patients.

A study looks beyond T and B cell responses to show how the Pfizer COVID-19 vaccine elicits a strong innate immune response.

Immune-response levels to the edible vaccine varied among the subjects, possibly due to differences in the gut microbiome.

More than a dozen vaccines for tuberculosis are currently being tested in clinical trials. Some use whole bacteria as BCG does, while others deliver protein subunits or genetic material carried by viral vectors.  

This month marks the 100-year anniversary of BCG, still the only approved vaccine against the lethal pathogen. But there are new vaccines for this wily foe on the horizon.

Scientists are on the hunt for a shot that will protect against not only SARS-CoV-2, but other members of its family that may emerge in the future.

Moderna’s, Pfizer’s, and Johnson & Johnson’s shots all offered protection against the virus regardless of cancer type, although slightly less so in people with blood cancer.

Scientists use a protein found in mucus membranes to ferry vaccines to the lymph nodes.

By avoiding the production of antibodies, something vaccines ordinarily induce, the immunization sidesteps the problem of antibody-dependent enhancement, which can amplify infection by a similar virus and is known to occur with dengue and Zika.

While some experts speculate the variant could be partially responsible for India’s current surge in SARS-CoV-2 infections, information about the effects of its mutations is only beginning to emerge.

Immunization had up to 77 percent efficacy in a Phase 2 clinical study of 450 children in Burkina Faso.