How are the people of Meghalaya trying to overcome this present Covid-19 pandemic situation... (In 5 lines only, unnecessary answers report)
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Research is still ongoing into how strong that protection is and how long it lasts. WHO is also looking into whether the strength and length of immune response depends on the type of infection a person has: without symptoms (‘asymptomatic’), mild or severe. Even people without symptoms seem to develop an immune response.
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