bratchere757 bratchere757

24-03-2020
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Pandemics can be caused by new strains of virus true or false

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alyssadaan62452 alyssadaan62452

24-03-2020

i think is is true.

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tristan59777 tristan59777

24-03-2020

It is true because humans would not have an immunity to that new strain and depending on which virus it is it could cause a pandemic

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