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Jul 1: Hong Kong police moved swiftly on Wednesday against protesters gearing up for the first rally since the introduction of sweeping security legislation, making their first arrest under it and warning of punishment for pro-independence material.

Beijing on Tuesday unveiled the details of the much-anticipated law after weeks of uncertainty, pushing China's freest city and one of the world's most glittering financial hubs onto a more authoritarian path.

As hundreds of protesters gathered downtown for an annual rally marking the 23rd anniversary of the former British colony's handover to China, riot police used pepper spray to arrest at least two people, while one metro station closed.

Police, who earlier banned the rally, cited the law for the first time in confronting protesters and they also made their first arrest under it - a man holding a flag advocating independence.

"You are displaying flags or banners/chanting slogans/or conducting yourselves with an intent such as secession or subversion, which may constitute offences under the ... national security law," police said in a message displayed on a purple banner.

The law will punish crimes of secession, subversion, terrorism and collusion with foreign forces with up to life in prison, heralding a more authoritarian era for the Asian financial hub.

China's parliament adopted it in response to months of pro-democracy protests last year triggered by fears that Beijing was stifling the city's freedoms, guaranteed by a "one country, two systems" formula agreed when it returned to Chinese rule.

Authorities in Beijing and Hong Kong have repeatedly said the legislation is aimed at a few "troublemakers" and will not affect rights and freedoms, nor investor interests.

But critics fear it will crush the freedoms that are seen as key to Hong Kong's success as a financial centre.

"With the release of the full detail of the law, it should be clear to those in any doubt that this is not the Hong Kong they grew up in," said Hasnain Malik, head of equity research, Tellimer in Dubai.

"The difference is that U.S. and China relations are far worse and this could be used as a pretext to impede the role of Hong Kong as a finance hub."

In Beijing, Zhang Xiaoming, executive deputy director of Beijing's Hong Kong and Macau Affairs Office, told reporters suspects arrested by Beijing's new security office in Hong Kong could be tried on the mainland.

He said the mainland's national security office abided by Chinese law and that Hong Kong's legal system could not be expected to implement the laws of the mainland. Article 55 of the law states that Beijing's national security office in Hong Kong could exercise jurisdiction over "complex" or "serious" cases.

Mainland security agencies will also be based in Hong Kong officially for the first time, with powers that go beyond city laws.

"The law is a birthday gift to (Hong Kong) and will show its precious value in the future," Zhang said, adding the law would not be applied retroactively.

On July 1 last year, hundreds of protesters stormed and vandalised the city's legislature to protest against a now-scrapped bill that would have allowed extraditions to mainland China.

Those protests evolved into calls for greater democracy, paralysing parts of the city and paving the way for Beijing's imposition of the law this week.

'INEVITABLE'

Speaking at a flag-raising ceremony to mark the handover anniversary, the city's Beijing-backed leader, Carrie Lam, said the law was the most important development since the city's return to Chinese rule.

"It is also an inevitable and prompt decision to restore stability," Lam said at the same harbour-front venue where 23 years ago the last colonial governor, Chris Patten, a staunch critic of the security law, tearfully handed back Hong Kong to Chinese rule.

Some pro-Beijing officials and political commentators say the law is aimed at sealing Hong Kong's "second return" to the motherland after the first failed to bring residents to heel.

Luo Huining, the head of Beijing's top representative office in Hong Kong, said at the ceremony the law was a "common aspiration" of Hong Kong citizens.

Critics denounced the lack of transparency surrounding the details of the legislation until it was unveiled. It came into force at 11 p.m. (1500 GMT) on Tuesday.

Some pro-democracy activists gave up membership of their groups just before the law came into force, though calling for the campaign for democracy to go on offshore.

"I saw this morning there are celebrations for Hong Kong's handover, but to me it is a funeral, a funeral for 'one country two systems'," said democracy lawmaker Kwok Ka-ki.

Feb 22: A 20-year-old Chinese woman from Wuhan, the epicentre of the coronavirus outbreak, travelled 400 miles(675 km) north to Anyang where she infected five relatives, without ever showing signs of infection, Chinese scientists reported on Friday, offering new evidence that the virus can be spread asymptomatically.

The case study, published in the Journal of the American Medical Association, offered clues about how the coronavirus is spreading, and suggested why it may be difficult to stop.

"Scientists have been asking if you can have this infection and not be ill? The answer is apparently, yes," said Dr. William Schaffner, an infectious disease expert at Vanderbilt University Medical Center, who was not involved in the study.

China has reported a total of 75,567 cases of the virus known as COVID-19 to the World Health Organization (WHO) including 2,239 deaths, and the virus has already spread to 26 countries and territories outside of mainland China.

Researchers have reported sporadic accounts of individuals without any symptoms spreading the virus. What's different in this study is that it offers a natural lab experiment of sorts, Schaffner said.

"You had this patient from Wuhan where the virus is, travelling to where the virus wasn't. She remained asymptomatic and infected a bunch of family members and you had a group of physicians who immediately seized on the moment and tested everyone."

According to the report by Dr Meiyun Wang of the People's Hospital of Zhengzhou University and colleagues, the woman travelled from Wuhan to Anyang on Jan. 10 and visited several relatives. When they started getting sick, doctors isolated the woman and tested her for coronavirus. Initially, the young woman tested negative for the virus, but a follow-up test was positive.

All five of her relatives developed COVID-19 pneumonia, but as of Feb. 11, the young woman still had not developed any symptoms, her chest CT remained normal and she had no fever, stomach or respiratory symptoms, such as cough or sore throat.

Scientists in the study said if the findings are replicated, "the prevention of COVID-19 infection could prove challenging."

Key questions now, Schaffner said, are how often does this kind of transmission occur and when during the asymptomatic period does a person test positive for the virus.

May 12: Gunmen stormed a hospital on Tuesday in an ongoing attack in the Afghan capital Kabul, as a suicide blast killed 15 people at a funeral in the country's restive east.

Special forces rescued 80 people including mothers and babies from the Kabul hospital after three gunmen launched a morning assault, killing at least four people, the interior ministry said in a statement.

Heavily armed forces were seen carrying babies wrapped in blankets away from the scene, as the clearance operation continued.

The facility, which has a large maternity ward, is located in the west of the city, home to the capital's minority Shiite Hazara community -- a frequent target of Sunni militants from the Islamic State group.

The flare-up in violence comes as Afghanistan grapples with myriad crises including a rise in militant operations across the country and a surge in coronavirus infections.

A paediatrician who fled the hospital told AFP he heard a loud explosion at the entrance of the building.

"The hospital was full of patients and doctors, there was total panic inside," he said, asking not to be named.

The maternity services at the hospital are supported by humanitarian organisation Doctors Without Borders (MSF).

"Hospitals and health workers must not be attacked. We call on all sides to stop attacking hospitals and health workers," said deputy health minister in the city, Waheed Majroh.

Around an hour later, a suicide bomber killed at least 15 people at the funeral of a local police commander in the country's eastern Nangarhar province, according to provincial spokesman Ataullah Khogyani.

The attacker detonated his explosives in the middle of the ceremony.

Zaher Adel, spokesman for the government hospital in Jalalabad, earlier said 12 bodies had arrived from the blast site and more than 50 people were being treated for injuries.

Amir Mohammad, who was wounded in the blast, said thousands of people had gathered for the funeral, an event which often draws huge crowds in Afghanistan.

The violence comes just a day after four roadside bombs exploded in a northern district of Kabul, wounding four civilians including a child.

The bombings were later claimed by the Islamic State group, according to the SITE intelligence group.

They were just the latest in a string of IS attacks on the capital.

In March, at least 25 people were killed by a gunman at a Sikh temple in Kabul, which was later claimed by the group.

IS is also responsible for an infamous attack in March 2017 on one of the country's largest hospitals, when gunmen disguised as doctors stormed the Kabul building and killed dozens.

In recent months, the jihadist group has suffered mounting setbacks after being hunted by US and Afghan forces as well as Taliban offensives targeting their fighters, but it still retains the ability to launch major assaults on urban centres.

The Taliban have largely refrained from launching large attacks on Afghan cities since February when they signed a landmark withdrawal deal with the US meant to pave the way for peace talks with the Kabul government.

Under the agreement, the Taliban promised not to target forces from the US-led coalition, but made no such pledge toward Afghan troops and have stepped up attacks in the provinces.

The Taliban have denied involvement in both of Tuesday's attacks.