Shares of BioNTech, Moderna and Pfizer will be closely watched on Tuesday after the CDC's advisory panel, the ACIP, remained circumspect about the need for a booster dose of the vaccine in the US, leaving the door open for the agency to scuttle the Biden Administration's push for booster jabs.

While Israel is the world leader in terms of the largest percentage of the population to have received a third "booster" dose, other countries, including Turkey, have started doling them out, too. And despite the WHO's pleas for western nations not to be too greedy with their jabs, the Biden Administration has repeatedly announced that it's working on approvals for booster jabs eight months after the second dose.