Which types of cells kill infected cells?

Immune cells fight______________.

What is the oxygen molecule sign?

What is the water molecule sign?

Do killer T cells kill bacteria? Answer: Cytotoxic T-lymphocytes (CTL) are famous for their ability to kill tumor, allogeneic and virus-infected cells. However, an emerging literature has now demonstrated that CTL also possess the ability to directly recognize and kill bacteria, parasites, and fungi.

Light lost _ years to enter proxima centauri from the solar system.

How many songs are there in the world?

How many antibodies are there in the human body? Answer: In theory, there could be some 10³⁰ antibodies, one for each of the multitude of potential antigens that our bodies might be exposed to.

How does corona spread?

If you don't have any symptoms of corona, means you are not sick

How many letters are there in the alphabet?

What is the 2nd letter in the alphabet?

In above, what are the jobs of macrophages?

What is the tempurature that the atoms stop spinning?

The fraction 6/12 equals to.

The observable universe is about:

what is this song?

How many songs does Alan compose?

What is roblox?

How does the coronavirus spread? Answer:

The WHO has designated the outbreak with its highest warning level [Kevin Frayer/Getty Images]

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The new coronavirus continues to spread around the world, prompting governments to step up efforts to contain the spread of the disease it causes, offically known as COVID-19.

More than 5,700 people have died globally from the disease, while more than 152,00 infections have been confirmed in dozens of countries, according to the World Health Organization, which has now declared the outbreak a pandemic.

More:Coronavirus: All you need to know about the symptoms and risks

Timeline: How the coronavirus spread

Coronavirus: Which countries have confirmed new cases?

Here is what you need to know:

How is the coronavirus spreading?The coronavirus - known as COVID-19 - spreads from person to person in close proximity, similar to other respiratory illnesses, such as the flu.

Droplets of bodily fluids - such as saliva or mucus - from an infected person are dispersed in the air or on surfaces by coughing or sneezing.

These droplets can come into direct contact with other people or can infect those who pick them up by touching infected surfaces and then their face.

According to scientists, coughs and sneezes can travel several feet and stay suspended in the air for up to 10 minutes. It is not yet known how long the virus can survive outside a host but, in other viruses, it ranges from a few hours to months.

Transmission is of particular concern on transport, where droplets containing the coronavirus could pass between passengers or via surfaces like aeroplane seats and armrests.

The incubation period of the coronavirus, the length of time before symptoms appear, is between one and 14 days.

Although not yet confirmed, Chinese health authorities believe the virus can be transmitted before symptoms appear.

This would have major implications for containment measures, according to Gerard Krause, head of the Department for Epidemiology at the Helmholtz Centre for Infection.

"It's unusual for respiratory diseases transmissible even before the first symptoms have occurred," he told Al Jazeera.

"But the consequences is that if it happens then they have no public health means to sort out or to identify people at risk of transmitting, because they don't even know that they're ill yet."

Read more: What is being done to stop the spread, and when will a vaccine become available?China has placed Wuhan and more than a dozen other cities under lockdown, affecting more than 60 million people, although this has not prevented the virus from spreading to all of China's provinces.

As the number of confirmed cases continues to rise, businesses and countries are taking increasingly drastic action.Scores of airlines have halted flights to China, while a number of countries are evacuating their citizens from Wuhan and Hubei.

Several countries have closed their borders with China and others have banned entry to Chinese citizens.

Person-to-person transmission has been confirmed in several countries, which WHO emergency chief Michael Ryan has called a "great concern".

Even with recent advances in medical technology, it is unlikely a vaccine could be available for mass distribution within a year.

This means that public health measures to contain the spread will be crucial to contain the outbreak.

Restrictions on movement will not stop the spread of the disease entirely but will slow its progress and buy time for areas that have avoided infection to prepare. It will also limit the strain on health infrastructure by reducing the number of infections at any one time, said Krause.

What things above should you do to avoid corona?

What is the best way to avoid corona?

What is the 2nd line of defense against pathogens?

Pacman scares_____.