{"id":"https://openalex.org/keywords/second-wave","display_name":"second wave","description":"A later surge in the incidence or spread of an epidemic after an earlier wave has subsided.","display_name_alternatives":["second waves","second epidemic wave","second wave of infections"],"ids":{"openalex":"https://openalex.org/keywords/second-wave","wikidata":null},"primary_topic":{"id":"https://openalex.org/T10410","display_name":"COVID-19 epidemiological studies","score":0.4181,"subfield":{"id":"https://openalex.org/subfields/2611","display_name":"Modeling and Simulation"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10410","display_name":"COVID-19 epidemiological studies","score":0.4181,"subfield":{"id":"https://openalex.org/subfields/2611","display_name":"Modeling and Simulation"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10041","display_name":"COVID-19 Clinical Research Studies","score":0.0882,"subfield":{"id":"https://openalex.org/subfields/2725","display_name":"Infectious Diseases"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"works_count":2205,"cited_by_count":23993,"works_api_url":"https://api.openalex.org/works?filter=keywords.id:keywords/second-wave","updated_date":"2026-10-22T04:07:25","created_date":"2026-09-30T00:00:00"}