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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.

Ballari, Mar 6: Ballari Deputy Commissioner S S Nakul on Friday said that two persons who had shown symptoms of COVID-19 had been admitted to the district government hospital here.

Informing this to the presspersons here, Mr Nakul said that the cases were reported from Jindal village of K R Hospital taluk and another one from Hospet town in Ballari taluk.

He said a suspect returned from Dubai to Hospet last week and showed symptoms of COVID-19. Both suspected patients were admitted to special isolated ward in Ballari government hospital and their throat swab tests taken on Thursday had been sent to lab in Bangalore to check for COVID-19.

Bengaluru, Jul 17: A total of 3,693 new COVID-19 positive cases and 115 deaths were reported in Karnataka on Friday, said the state health department.

The total number of COVID-19 cases in the state is presently at 55,115, including 33,205 active cases. While there are 20,757 recoveries, the death toll stands at 1,147.

With the highest single-day spike of 34,956 cases and 687 deaths, India's COVID-19 positive cases crossed the 10 lakh mark on Friday, according to the Union Ministry of Health and Family Welfare.

The total positive cases stand at 10,03,832 including 3,42,473 active cases, 6,35,757 cured/discharged/migrated and 25,602 deaths, according to the ministry.