Udupi: Prathvik Nayak, alumnus of ISS Dammam scores 97% in PU science

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, Mar 27: Nine throat swab samples that were sent for testing of the coronavirus, have been declared as negative while samples of four more persons are currently being tested, official sources said on Friday.

Dakshina Kannada Deputy Commissioner Sindhu B. Rupesh said that 2,902 people are under home quarantine in the district as of today while three were admitted to hospitals for observation.

Around 38,051 people have been inspected, so far, here in this district.

New Delhi, Mar 21: The Indian Railways has cancelled all train services on Sunday in view of the Janata Curfew called by prime minister Narendra Modi. All mail and express trains will stop services from 4 am to 10 pm on Sunday while all suburban train services will be reduced to a bare minimum.

Around 1,300 long-distance, mail express services will also stand cancelled in light of the curfew to bat Covid-19. These long distance trains will remain cancelled between 4 am to 10 pm on Sunday.

All passenger trains originating between the midnight of Saturday-Sunday will not be run till 10 pm, Sunday, a railway ministry official said.

However, the passenger train services already on run at 7 am on the day will be allowed to run to the destinations, a railway ministry circular to zonal railways issued on Friday said.

The Indian Railways operates around 9,000 passenger trains and 3,500 mail express services each day.

“We have sent a directive to all zonal railways, and they will get back with the total number of train services affected, by Saturday afternoon,” an official ET spoke with, said.

In his address to the nation on Thursday, the Prime Minister called for a ‘janta curfew’ between 7 am to 9 pm on Sunday, in a social-distancing drive amid the coronavirus outbreak.

Passengers alighting at enroute stations from trains already on run, and desirous of staying at the station, may be accommodated in the waiting rooms at railway stations, without overcrowding them, the circular said.

The ministry has advised zonal railways to arrange for hassle-free refund to passengers affected because of cancelled trains, while regulating train services on Sunday.

Meanwhile, to contain the spread of Covid-19, all the food plazas, jan aahar stalls have been advised to be shut until further notice by IRCTC.

The on-board catering services in mail express trains are to be closed until further advice, while static units supplying meals to prepaid trains in operation, will continue to function.