More than 1600 arrested in anti-Putin street protests in Russia

Houston, Mar 15: Researchers, studying the novel coronavirus, have found that the time between cases in a chain of transmission is less than a week, and over 10 per cent of patients are infected by someone who has the virus, but does not show symptoms yet, a finding that may help public health officials contain the pandemic.

The study, published in the journal Emerging Infectious Diseases, estimated what's called the serial interval of the coronavirus by measuring the time it takes for symptoms to appear in two people with the virus -- the person who infects another, and the infected second person.

According to the researchers, including those from the University of Texas at Austin, the average serial interval for the novel coronavirus in China was approximately four days.

They said the speed of an epidemic depends on two things -- how many people each case infects, and how long it takes cases to spread.

The first quantity, the scientists said, is called the reproduction number, and the second is the serial interval.

Due to the short serial interval of the disease caused by the coronavirus -- COVID-19 -- they said, emerging outbreaks will grow quickly, and could be difficult to stop.

“Ebola, with a serial interval of several weeks, is much easier to contain than influenza, with a serial interval of only a few days,” said Lauren Ancel Meyers, study co-author from UT Austin.

Meyers explained that public health responders to Ebola outbreaks have much more time to identify and isolate cases before they infect others.

“The data suggest that this coronavirus may spread like the flu. That means we need to move quickly and aggressively to curb the emerging threat,” Meyers added.

In the study, the scientists examined more than 450 infection case reports from 93 cities in China, and found the strongest evidence yet that people without symptoms must be transmitting the virus -- known as pre-symptomatic transmission.

More than one in ten infections were from people who had the virus but did not yet feel sick, the scientists said.

While researchers across the globe had some uncertainty until now about asymptomatic transmission with the coronavirus, the new evidence could provide guidance to public health officials on how to contain the spread of the disease.

“This provides evidence that extensive control measures including isolation, quarantine, school closures, travel restrictions and cancellation of mass gatherings may be warranted,” Meyers said.

The researchers cautioned that asymptomatic transmission makes containment more difficult.

With hundreds of new cases emerging around the world every day, the scientists said, the data may offer a different picture over time.

They said infection case reports are based on people's memories of where they went and whom they had contact with, and if health officials move quickly to isolate patients, that may also skew the data.

“Our findings are corroborated by instances of silent transmission and rising case counts in hundreds of cities worldwide. This tells us that COVID-19 outbreaks can be elusive and require extreme measures,” Meyers said.

Islamabad, Jun 10: The World Health Organization has told Pakistan it should implement "intermittent" lockdowns to counter a surge in coronavirus infections that has come as the country loosens restrictions, officials said.

Since the start of Pakistan's outbreak in March, Prime Minister Imran Khan opposed a nationwide lockdown of the sort seen elsewhere, arguing the impoverished country could not afford it.

Instead, Pakistan's four provinces ordered a patchwork of closures, but last week Khan said most of these restrictions would be lifted.

Health officials on Wednesday declared a record number of new cases in the past 24 hours. The country has now confirmed a total of more than 113,000 cases and 2,200 deaths -- though with testing still limited, real rates are thought to be much higher.

"As of today, Pakistan does not meet any of the pre-requisite conditions for opening the lockdown", the WHO said in a letter confirmed by Pakistan officials on Tuesday.

Many people have not adopted behavioural changes such as social distancing and frequent hand-washing, meaning "difficult" decisions will be required including "intermittent lockdowns" in targeted areas, the letter states.

Some 25 percent of tests in Pakistan come back positive for COVID-19, the WHO said, indicating high levels of infection in the general population.

The health body recommended an intermittent lockdown cycle of two weeks on, two weeks off.

Responding to the WHO's letter, Zafar Mirza, the prime minister's special advisor for health, said the country had "consciously but gradually" eased lockdowns while enforcing guidelines in shops, mosques and public transport.

"We have to make tough policy choices to strike a balance between lives and livelihoods," Mirza said Wednesday.

Punjab's provincial health minister Yasmin Rashid, who received the WHO's letter, said the provincial government had already given "orders to take strict action against those violating" virus guidelines.

Hospitals across Pakistan say they are at or near capacity, and some are turning COVID-19 patients away.

WHO Director-General Tedros Adhanom Ghebreyesus said Monday that 136,000 cases had been reported in the previous 24 hours, "the most in a single day so far", with the majority of them in South Asia and the Americas.

Washington, May 22: The deadly coronavirus came from China and the US is not going to take it lightly, American President Donald Trump said on Thursday.

"It came from China. We are not happy about it. We just signed a trade deal, the ink wasn't dry and all of the sudden this floated in. We are not going to take it lightly,” Trump said participating in a Listening Session with African-American Leaders in Michigan.

Trump in the last several weeks has been very critical of China's inability to control the spread of the novel coronavirus within its territory. By Thursday more than 94,000 Americans have died due to the coronavirus and over 1.6 million have tested positive.

He has so far not given any indication of the steps that he is contemplating taking against China.

Meanwhile, pressure is building on his administration, mainly from the Republican lawmakers on this.

On Thursday, Senators Ted Cruz and Rick Scott, along Mike Braun, Marsha Blackburn, Joni Ernst, Martha McSally and Tom Cotton, introduced the COVID-19 Vaccine Protection Act to prevent the Chinese Communist Party from stealing or sabotaging American COVID-19 vaccine research.

The bill requires a thorough national security evaluation and clearance by the Department of Homeland Security, the Department of State, and the Federal Bureau of Investigation of all Chinese student visa holders taking part in activities related to COVID-19 vaccine research.

"The same Chinese Communist Party that covered up the coronavirus outbreak also routinely engages in state sponsored theft of intellectual property," Cruz said. "We cannot allow China to steal or interfere with American research and development of a vaccine,” he added.

"Communist China is responsible for the coronavirus pandemic, and their lies and misinformation cost American lives," Scott said.

"We cannot let Communist China off the hook for this, and we absolutely cannot allow Communist China to steal or sabotage any American research efforts related to the Coronavirus vaccine. The COVID-19 Vaccine Protection Act protects American efforts to create a vaccine as we work to end this pandemic," he added.

The COVID-19 Vaccine Protection Act, among others requires an enhanced vetting of nationals of the Chinese nationals in the US as nonimmigrants under F, J, or M student visas to determine if any student visa holders are a national security threat.

Once the review is complete, authorizes Department of Homeland Secretary, in consultation with other agencies, to continuously monitor all nonimmigrant student visa holders (F, M, J) who are Chinese nationals while in the US and are engaged in, or have access to, the research of any potential COVID-19 vaccine or COVID-19 related material.

Republican Whip and Ranking Member of the Select Subcommittee on the Coronavirus Crisis Steve Scalise alleged that China lied to the world on coronavirus.

"During a critical period in December and January, China withheld evidence of the virus: evidence that confirmed human to human transmission of the virus, evidence of the extent of the spread. China refused entry of American and other medical experts from around the world for weeks,” he said.

“And during this time, China hoarded medical supplies like masks, gowns, and other life-saving PPE. Chinese exports of surgical masks, gowns, and gloves were stifled by the Chinese Communist Party during this period. China knew the danger posed by the virus and while they hid the truth, they used the time to stock up on vital medical supplies,” Scalise said.

“While Chinese authorities limited domestic flights from Wuhan to other Chinese cities like Beijing and Shanghai, China's government urged international carriers to maintain their flight schedules — seeding the virus throughout the rest of the world,” he alleged.