U.S. health experts on Thursday urged Americans to prepare for severe disruptions in coming weeks as the rising wave of COVID-19 cases led by the omicron variant threatened hospitals, schools and other sectors impacting their daily lives.

The warning came as the United States reached a record high in COVID-19 cases, while federal officials issued more travel warnings and reportedly prepared to authorize booster shots for 12- to 15-year-olds next week.

For the second day in a row, the United States had a record number of new reported cases based on the seven-day average, with more than 290,000 new infections reported each day, a Reuters tally showed.