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Our Immune System and COVID-19

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Our immune system is our bodies defence against infection

How do our bodies fight infection?


When germs, like the virus that causes COVID-19 invade our bodies, they attack and muliply.  This infection is what causes illness.  Our immune system uses several germ-fighting tools to fight the infection, but it can take several days or weeks for our bodies to make these  tools, which means we can get sick in the meantime. 


After an infection, our immune system remembers what it learnt to protect the body against that same disease next time.  


The body keeps a few T-lymphocytes, called “memory cells”, that can quickly respond  to clear the infection and limit the damage to our bodie if the body meets the same virus again.  


You might have heard peope talk about these antibodies to describe whether a COVID-19 case was an ‘historical case’. 


How the COVID -19 Vaccines work?


COVID -19 vaccines help our bodies develop immunity  (the bodies memory of the infection) to the virus that causes COVID -19 without us having to get the illness.  


It takes a few week for the body to develop immunity after the vaccination.  


Sometimes, after vaccination, the process of building immunity might cause symptoms such as pain at the injection site, tiredness, headache, fever and muscle aches.  


The different kinds of Vaccines that will be used in New Zealand  


One COVID -19 vaccine, an mRNA vaccine by Pfizer/BioNTech  ComirnatyTM), is avilable in Aotearoa. 

The bottom line 


Getting vaccinated is one of many steps you can take to protect you and your whānau from COVID -19.  Protection from COVID -19 through vaccination is really important because for some people, catching this disease can cause severe illness or death 


Stopping a pandemic requires using all the tools available


Vaccines work with our immune system to help your body respond quickly and clear the virus if you are exposed.  


Other steps like physical distancing, washing your hands, cleaning surfaces and wearing masks on public transport and in situations where it is difficult to maintain physical distancing will help reduce your chance of catching this virus.


Together the COVID -19 vaccines and other public health measures will offer us the best protection against COVID -19.  

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