Japan said Friday it will shorten the quarantine period for travelers and returnees from countries and territories severely hit by the highly contagious Omicron variant to 10 days from the current 14, effective Saturday.The measure, which covers those arriving from effectively all countries and territories outside Japan, comes following research suggesting Omicron has a shorter incubation period than other COVID-19 variants."The length of period when they are required to self-quarantine in places such as their own residence or accommodations after their entry into Japan, to follow-up checks…READ FULL ARTICLE