Antibodies to the virus that causes COVID-19 are keys to immunity. [Credit: Compilation by Nancy R. Gough, BioSerendipity, LLC using Icons made by Freepik from Flaticon]

Immunity and a Mutating Virus: Challenges along the Path for COVID-19

If long-term immunity is not achievable, SARS-CoV-2 could become one of the viruses that affect the population year after year.

Tracking the amino acid mutations in SARS-CoV-2. The x axis is number of mutations. The colors represent countries with the patient with the virus. Each circle represents the sequence of the virus from a specific patient. At the time of this analysis, 2 of the viruses had more than 20 mutations compared to the first one sequenced. [From].

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