Top American Scientist Anthony Fauci

Top American scientist Anthony Fauci slammed a vaccine skeptic Republican senator for unleashing "crazies" who were threatening his life and harassing his family, in unusually emotional congressional testimony on Tuesday.

Top US pandemic advisor Anthony Fauci on Sunday acknowledged a Covid "testing problem" as the Omicron strain overwhelms the nation, and he vowed to make more tests available to Americans next month.

COVID-19's Omicron variant appears to be more transmissible, reinforcing the need for Americans to get vaccinations or booster shots, US health officials said.

Top American scientist Anthony Fauci slammed a vaccine skeptic Republican senator for unleashing "crazies" who were threatening his life and harassing his family, in unusually emotional congressional testimony on Tuesday.

Top US pandemic advisor Anthony Fauci on Sunday acknowledged a Covid "testing problem" as the Omicron strain overwhelms the nation, and he vowed to make more tests available to Americans next month.

COVID-19's Omicron variant appears to be more transmissible, reinforcing the need for Americans to get vaccinations or booster shots, US health officials said.