More than 25.3 million cases were recorded in the US since the start of the pandemic. India has almost 10.7 million infections and Brazil exceeds 8.8 million.
The global death toll was at more than 2.1 million, of which 423,000 have been recorded in the US. Brazil is second on that list with some 217,000 fatalities, followed by more than 153,000 in India.
Despite several vaccines that have been developed, new strains of the virus that recently emerged in the UK and South Africa have created uncertainty about whether the world will soon put the pandemic in the rearview mirror.
US pharmaceutical company Moderna announced Monday that its vaccine appears to work against a strain found in the UK, B.1.1.7, however, it said it could be less effective against the one in South Africa, B.1.351.
The vaccine developed by American pharmaceutical firm Pfizer and its German partner BioNTech works against 15 possible virus mutations; however, E484K, another mutation in South Africa, is not among those tested, according to a study released Jan. 7.
Anthony Fauci said earlier in January that vaccines are designed to recognize multiple parts of the spike protein, which makes it unlikely a single mutation could be enough to prevent them from being effective, but the US' top infectious disease expert said last Thursday that current vaccines may not be as effective in protecting against the new and more contagious strains.
In the US, out of 44,394,075 distributed doses vaccines, 23,540,994 were administered as of 6 a.m. EDT (1100GMT) Tuesday, according to the Centers for Disease Control and Prevention (CDC) data.
While 19,902,237 people received at least one dose of a vaccine, 3,481,921 have received two doses, CDC data showed.
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