Another group of nearly 350 Americans airlifted from the epicenter of China's fast-spreading coronavirus outbreak were placed under quarantine at two military bases in California on Wednesday, as the number of confirmed US cases of the disease rose to 12.

350 US citizens evacuated from China placed under coronavirus quarantine at military bases

California health officials said on Sunday they had confirmed 11 cases of the new, fast-spreading coronavirus in the United States, with one in Santa Clara County and two more in San Benito County.

US confirms 11th case of new coronavirus

The United States will begin screening efforts at three US airports to detect travellers from the central Chinese city of Wuhan who may have symptoms of a new respiratory virus that so far has killed two people and infected 45 more, public health officials said on Friday.

US to screen passengers for new China coronavirus at three airports

United States federal agency, Centers for Disease Control and Prevention has issued a 'level-two' travel alert which requires visitors to show evidence of polio vaccination for traveling to polio-endemic countries.

US federal agency issues travel alert for Pakistan, other polio-endemic countries