The US Food and Drug Administration is planning to allow Americans to get a different booster shot of a COVID-19 vaccine than the one initially taken, the New York Times reported.
The FDA in September authorised a booster dose of Pfizer Inc and partner BioNTech's two-shot COVID-19 vaccine for those aged 65 and older and some high-risk Americans.
The regulator's advisory panel has also backed the use of Moderna Inc and Johnson & Johnson's COVID-19 vaccine booster shots.
The government would not recommend one shot over another, and it might note that using the same vaccine as a booster when possible is preferable, the NYT report said, citing people familiar with the agency's plans.
The FDA declined to comment on the matter.
US health officials have been under pressure to authorise the additional shots after the White House announced plans in August for a widespread booster campaign pending approvals from the FDA and the US Centers for Disease Control and Prevention.
A study by the National Institutes of Health last week showed people who got Johnson & Johnson's COVID-19 vaccine as a first shot had a stronger immune response when boosted with vaccines from Pfizer and Moderna.
Iran is reviewing a proposed agreement with the United States to halt the war between the two countries, Iran's Mehr news reported on Tuesday, after US President Donald Trump said talks to reach a deal were continuing.
The World Health Organisation said there have been 321 confirmed cases of Ebola in the Democratic Republic of Congo outbreak and 116 suspected cases, marking a large drop in the number of suspected cases as hundreds were ruled out after investigation.
Israel kept up strikes on southern Lebanon on Tuesday, pressing its campaign against Hezbollah a day after US President Donald Trump asked Israeli Prime Minister Benjamin Netanyahu not to attack Beirut, averting further escalation in the three-month-old war.
Russian drones and missiles pounded the Ukrainian capital Kyiv and other cities early on Tuesday, killing at least 11 people and wounding more than 100, authorities said, following days of warnings about Moscow's plans for a major assault.
Two people died in central Kenya during a protest against a planned US Ebola quarantine facility, a protest organiser told Reuters on Tuesday, as President William Ruto rebuffed criticism it will endanger Kenyans.