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Washington, Jun 30: Researchers in China have discovered a new type of swine flu that is capable of triggering a pandemic, according to a study published Monday in the US science journal PNAS.

Named G4, it is genetically descended from the H1N1 strain that caused a pandemic in 2009.

It possesses "all the essential hallmarks of being highly adapted to infect humans," say the authors, scientists at Chinese universities and China's Center for Disease Control and Prevention.

The researchers then carried out various experiments including on ferrets, which are widely used in flu studies because they experience similar symptoms to humans -- principally fever, coughing and sneezing. 

G4 was observed to be highly infectious, replicating in human cells and causing more serious symptoms in ferrets than other viruses.

Tests also showed that any immunity humans gain from exposure to seasonal flu does not provide protection from G4.

According to blood tests which showed up antibodies created by exposure to the virus, 10.4 percent of swine workers had already been infected.

The tests showed that as many as 4.4 percent of the general population also appeared to have been exposed.

The virus has therefore already passed from animals to humans but there is no evidence yet that it can be passed from human to human -- the scientists' main worry.

"It is of concern that human infection of G4 virus will further human adaptation and increase the risk of a human pandemic," the researchers wrote.

The authors called for urgent measures to monitor people working with pigs.

"The work comes as a salutary reminder that we are constantly at risk of new emergence of zoonotic pathogens and that farmed animals, with which humans have greater contact than with wildlife, may act as the source for important pandemic viruses," said James Wood, head of the department of veterinary medicine at Cambridge University.

A zoonotic infection is caused by a pathogen that has jumped from a non-human animal into a human.

Mangaluru, May 5: A day after lockdown was partially relaxed in Dakshina Kannada, a fresh covid-19 positive case was reported today from Boloor area of Mangaluru.

In its fresh bulletin, health and family welfare department today said that the throat swabs of a 51-year-old man from Boloor tested positive for the coronavirus.

Boloor is already declared as corona containment zone in the district after as this is the fourth coronavirus positive case reported from the area.

With this, the total number of coronavirus cases in Dakshina Kannada mounted to 25 including 19 residents of the district and six outsiders who have already left the district after getting treatment.

Mangalore, Jun 3: One man was arrested by the Crime Branch of city police from Mangalore for allegedly having links with gangster Ravi Pujari, Joint Commissioner of Police (Crime) Sandeep Patil said on Wednesday.

According to the police, the man identified as Ghulam has been sent to 10-day police custody.

"During the investigation of a case related to Ravi Pujari, it was found that one Ghulam is a close associate of Pujari and had helped him in extortion and other illegal activity. Ghulam was arrested from Mangalore. He was produced before a court and sent to 10-day police custody," Patil said.

The senior police officer said that further investigation is on in the matter.

Pujari, who was wanted in several cases including ones related to heinous crimes like murder and extortion, was brought to Bengaluru earlier this year from Senegal. He had reportedly gone underground two decades ago and had allegedly been carrying out illegal activities from abroad.