Coronavirus
Can you catch coronavirus again? Why are some people sicker than others? Will it come back every winter? Will a vaccine work? Could immunity passports get some of us back to work? How do we manage the virus in the long-The immune system is at the heart of some of the most important questions about the coronavirus.
The problem is we know very little.
How do you become immune to coronavirus?
Our immune system is the body's defence against infection and it comes in two parts.
The first is always ready to go and leaps into action as soon as any foreign invader is detected in the body. It is known as the innate immune response and includes the release of chemicals that cause inflammation and white blood cells that can destroy
But this system is not specific to coronavirus. It will not learn and it will not give you immunity to the coronavirus.
Instead you need the adaptive immune response. This includes cells that produce targeted antibodies that can stick to the virus in order to stop it and T cells that can attack just the cells infected with the virus, called the cellular response.
This takes time - studies suggest it takes around 10 days to start making antibodies that can target the coronavirus and the sickest patients develop the strongest immune response.
If the adaptive immune response is powerful enough, then it could leave a lasting memory of the infection that will give protection in the future.
It is not known if people who have only mild symptoms, or none at all, will develop a sufficient adaptive immune response.
The problem is we know very little.
How do you become immune to coronavirus?
Our immune system is the body's defence against infection and it comes in two parts.
The first is always ready to go and leaps into action as soon as any foreign invader is detected in the body. It is known as the innate immune response and includes the release of chemicals that cause inflammation and white blood cells that can destroy
But this system is not specific to coronavirus. It will not learn and it will not give you immunity to the coronavirus.
Instead you need the adaptive immune response. This includes cells that produce targeted antibodies that can stick to the virus in order to stop it and T cells that can attack just the cells infected with the virus, called the cellular response.
This takes time - studies suggest it takes around 10 days to start making antibodies that can target the coronavirus and the sickest patients develop the strongest immune response.
If the adaptive immune response is powerful enough, then it could leave a lasting memory of the infection that will give protection in the future.
It is not known if people who have only mild symptoms, or none at all, will develop a sufficient adaptive immune response.
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