Facing calls to declare a coronavirus state of emergency, Japanese Prime Minister Shinzo Abe was derided on social media on Thursday for instead offering people cloth masks, pointing to growing frustration with his handling of the crisis. Abe's offer of free masks - two per household - came the day after experts had warned Japan was on the brink of a medical crisis as cases rose, especially in Tokyo. The prime minister said on Wednesday Japan was "barely holding the line" in its battle against the virus.