Aug 10, 2022
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What is Langya virus?
A new virus, Langya virus, is suspected to have caused infections in 35 people in China’s Shandong and Henan provinces over roughly a two-year period to 2021.
It’s related to Hendra and Nipah viruses, which cause disease in humans. However, there’s much we don’t know about the new virus – known as LayV for short – including whether it spreads from human to human.
Here’s what we know so far.
How sick are people getting?
Researchers in China first detected this new virus as part of routine surveillance in people with a fever who had reported recent contact with animals. Once the virus was identified, the researchers looked for the virus in other people.
Symptoms reported appeared to be mostly mild – fever, fatigue, cough, loss of appetite, muscle aches, nausea and headache – although we don’t know how long the patients were unwell.
A smaller proportion had potentially more serious complications, including pneumonia, and abnormalities in liver and kidney function. However, the severity of these abnormalities, the need for hospitalisation, and whether any cases were fatal were not reported.
Where did this virus come from?
The authors also investigated whether domestic or wild animals may have been the source of the virus. Although they found a small number of goats and dogs that may have been infected with the virus in the past, there was more direct evidence a significant proportion of wild shrews were harbouring the virus.
This suggests humans may have caught the virus from wild shrews.
Does this virus actually cause this disease?
The researchers used a modern technique known as metagenomic analysis to find this new virus. Researchers sequence all genetic material then discard the “known” sequences (for example, human DNA) to look for “unknown” sequences that might represent a new virus.
This raises the question about how scientists can tell whether a particular virus causes the disease.
We have traditionally used “Koch’s postulates” to determine whether a particular micro-organism causes disease:
it must be found in people with the disease and not in well people
it must be able to be isolated from people with the disease
the isolate from people with the disease must cause the disease if given to a healthy person (or animal)
it must be able to be re-isolated from the healthy person after they become ill.
The authors acknowledge this new virus doesn’t yet meet these criteria, and the relevance of these criteria in the modern era has been questioned.
However, the authors say they didn’t find any other cause of the illness in 26 people, there was evidence 14 people’s immune systems had responded to the virus, and people who were more unwell had more virus.
What can we learn from related viruses?
What do we need to find out next?
more details here: Langya virus
Less than 3 years after the outbreak of COVID-19 started in China, the threat of a new virus has been identified in China.
While the threat of COVID-19 still lingers two years on from the start of the pandemic and the outbreak of monkeypox is far from being contained, a new virus is looming over the horizon.
Researchers are monitoring the spread of the novel Langya henipavirus (LayV) in China, where dozens of cases have already been reported.
The virus was first detected in 2018 in the northeastern provinces of Shandong and Henan but was only officially identified last week after China experienced a sudden surge in cases, now up to a total of 35.
According to a study by the Beijing Institute of Microbiology and Epidemiology published last week, the Langya virus cases were identified after several patients experiencing a fever and reporting a history of animal exposure in eastern China were examined by health officials as part of a health surveillance project.
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New Langya Virus in China Infects 35 People, It is More Fatal Than Covid
New Langya Virus in China Infects 35 People, It is More Fatal Than Covid
The world has not yet recovered from the coronavirus pandemic, and more threats are already on the horizon. According to the New England Journal of Medicine, a novel henipavirus has been discovered in the Shandong and central Henan provinces of China. The novel virus has infected 35 people so far. Of the 35 infected patients, 26 were infected exclusively with the Langya virus (LayV). The 26…
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Nearly three dozen people in China have been sickened by a newly identified virus from the same family as the deadly Nipah and Hendra viruse
Holy cow.
Scientists detected another potential zoonotic spillover nearly three years into the coronavirus pandemic, though evidence suggests very low fatality rates.
DOCTORS in China have sounded the alarm over a newly detected virus. “Langya” virus has infected 35 people so far in two provinces in easter
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