In South Korea, Singapore and Iran, clusters of infections are leading to a jump in cases of the new viral illness outside China. But it’s not the numbers that are worrying experts: It's that increasingly they can't trace where the clusters started.World...

WASHINGTON (AP) — Reports one day suggest the respiratory outbreak in China might be slowing, the next brings word of thousands more cases. Even the experts have whiplash in trying to determine if the epidemic is getting worse, or if a backlog of the...

WASHINGTON (AP) — The flu-like virus that exploded from China has researchers worldwide once again scrambling to find a vaccine against a surprise health threat, with no guarantee one will arrive in time.Just days after Chinese scientists shared the...

Health authorities are preparing for a possible pandemic as they work to contain a respiratory illness in China that's caused by a new virus. Governments are limiting travel, isolating sick people and keeping travelers returning from the affected region...

NEW YORK (AP) — For the first time in the U.S., the new virus from China has spread from one person to another, health officials said Thursday.The latest case — the sixth in the country — is the husband of a Chicago woman who got sick from the virus...

BEIJING (AP) — World health officials expressed “great concern” Wednesday that a dangerous new virus is starting to spread between people outside of China, a troubling development as China and the world frantically work to contain the outbreak....

LOS ANGELES (AP) — The U.S. has five confirmed cases of the new virus from China, all among people who traveled to the city at the center of the outbreak, health officials said Sunday.Two new cases were reported Sunday — one in Los Angeles County...