HANOI -- Ho Chi Minh City, Vietnam's southern commercial hub, is on high alert after a hospital developed a COVID-19 cluster in which more than 50 health care workers contracted the virus despite being vaccinated.
Ho Chi Minh City struggles to stop spread after outbreaks in northern factories

Ho Chi Minh City is on high alert after a hospital developed a COVID-19 cluster in which more than 50 health care workers contracted the virus despite being vaccinated.(Source photos by Reuters and Getty Images)
HANOI -- Ho Chi Minh City, Vietnam's southern commercial hub, is on high alert after a hospital developed a COVID-19 cluster in which more than 50 health care workers contracted the virus despite being vaccinated.