BEIJING — China is now requiring those arriving on the mainland from Hong Kong show a negative coronavirus test taken within the previous three days and undergo 14 days of supervised quarantine in order to gain entry, following a new outbreak in the semi-autonomous region.

Notable exceptions include students and truck drivers who must cross the border on a daily basis, along with “important business people” and others recognized under bilateral policies excluding them from quarantine demands, according to the official notice.

The new requirement took effect from 10 a.m. on Friday.

Hong Kong reported 67 new cases of coronavirus infections on Thursday, an all-time daily high. Authorities said 63 were locally transmitted and that they could not trace the source for 35 of them.

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HERE’S WHAT YOU NEED TO KNOW ABOUT THE VIRUS OUTBREAK:

— Virus prompts drastic measures as death tolls set records

— Struggling India crosses 1 million coronavirus cases

— Russia is hacking virus vaccine trials, U.S., Britain, Canada say

— Georgia governor suing to block Atlanta from enforcing mask order

— Brazil tops 2 million coronavirus cases, with 76,000 dead

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Follow all of AP’s pandemic coverage at http://apnews.com/VirusOutbreak and https://apnews.com/UnderstandingtheOutbreak

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HERE’S WHAT ELSE IS HAPPENING:

MELBOURNE, Australia — Australia’s Victoria state has reported a daily record of 428 new COVID-19 cases as authorities move to increase testing in the state to monitor for any spread of the coronavirus from the Melbourne area.

Most of the new cases and three deaths reported Friday were in Melbourne.

Melbourne and neighboring semi-rural Mitchell Shire have been locked down since last week and authorities hope the restrictions will soon bring a plateauing of infections.

Victoria Premier Daniel Andrews says only five of the new cases are in parts of the state not in lockdown. He says the government is increasing the number of testing sites outside Melbourne.

The state health minister adds that all but 42 coronavirus infections detected in Victoria this month were in Melbourne and Mitchell Shire.

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SEOUL, South Korea -- South Korean health officials are expressing optimism that the country’s COVID-19 outbreak is coming under control despite a spike in infections tied to international arrivals.

Senior Health Ministry official Yoon Tae-ho said at a briefing Friday that the spread of the coronavirus is clearly stabilizing in the densely populated Seoul metropolitan area and other major cities, where transmissions had surged since late May.

South Korea’s Centers for Disease Control and Prevention reported 60 newly confirmed cases, including 39 linked to people arriving from abroad.

Yoon says imported cases are less threatening than local transmissions because South Korea is enforcing two-week quarantines on all people arriving from abroad and having them tested within three days.