Abstract
The World Health Organization announced on May 4, 2023 that coronavirus infection is no longer a global emergency, but despite this, it proposed a strategy for 2023-2025 that includes the definition of immunization principles by each country, the need for case registrations and surveillance behind the virus. The review article presents data on high-risk groups for a severe course of a SARS-CoV-2 and new approaches to vaccination and revaccination recommended by WHO on depending on risk factors in patients and circulating new strains of the virus.
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