- U.S. CDC says adults 18 and over should get booster shots
- Scientists ask whether Omicron can outrun Delta
- Omicron poses 'very high' global risk, world must prepare: WHO
- U.S. steps up search for Omicron in domestic cases
- Dutch variant cases could be 'tip of the iceberg,' minister says
Special Report
Taiwan's friends aid secretive sub projectAs China steps up military pressure on Taiwan, the island has recruited help from abroad to build a new submarine fleet.
