CNBC Asia

China announced a new national security law on Friday, which, if implemented, would give Beijing more control over Hong Kong

Covid-19 has infected more than 5.3 million people worldwide and killed at least 340,875.

The U.S. government could impose sanctions against China, National Security Advisor Robert O'Brien said on Sunday in response to China's announcement of new national security law in Hong Kong that would curtail the city's autonomy and democracy.

In Texas, where Gov. Greg Abbott allowed gyms to reopen Monday at 25% capacity with modifications, gym owners say they've stocked up on cleaning supplies in anticipation of returning crowds.

Covid-19 has infected more than 5.2 million people worldwide and killed at least 338,121.

A Pakistan International Airlines passenger plane crashed near the Jinnah International Airport in Karachi, according to the civil aviation authority.

"In a sense, South America has become a new epicenter for the disease," Mike Ryan, executive director of the WHO's emergencies program, said.

A potential coronavirus vaccine developed in China appeared to provoke neutralizing antibodies in dozens of patients in an early-stage clinical trial, an important step in developing a vaccine that might provide immunity to Covid-19.

"I don't want people to think that any of us feel that staying locked down for a prolonged period of time is the way to go," he tells CNBC.

The state reported 225 new Covid-19 cases on Thursday, based on a three-day rolling average, which is at a "level now that is lower than we first began," Gov. Andrew Cuomo said at his daily press briefing.

SoftBank billionaire Masayoshi Son said that he can't ask for capital for Vision Fund 2 when Vision Fund 1 is performing badly.

Slightly more than half of the 129 countries reporting data to the World Health Organization, UNICEF, Gavi and the Sabin Vaccine Institute indicated that routine childhood immunization services were moderately to severely disrupted, or were totally suspended, from March to April.

Dr. Anthony Fauci also said any timeline for a vaccine is "never a promise."

Patients who took the drug or chloroquine were also more likely to develop irregular heart rhythms, researchers said.

The number of newly reported coronavirus cases worldwide hit a daily record this week at more than 100,000 new cases over a 24-hour span.

Russia reported 150 fatalities related to the coronavirus in the last 24 hours — a record daily jump that brought the country's death toll to 3,249, reported Reuters.

The legislation is expected to strengthen Beijing's hold over Hong Kong, a special administrative region of China.

China is set to introduce a national security law for Hong Kong, after the city was plunged into turmoil last year by pro-democracy protests that often degenerated into violence.

Emily Lau, a former Democratic Party member of the Hong Kong Legislative Council, said China hasn't kept up its "promise" under the "one country, two systems" framework.

The already serious friction between the United States and China ratcheted higher in recent weeks, and it's expanding to the stock market.