Headline: COVID immunity could last for two years, says doctorLink: https://wjla.com/news/nation-world/covid-immunity-could-last-for-two-years-says-…Publication Date: Monday, May 10, 2021Primary Source: WJLA.com (Washington D.C)Non-Cato Author: Elissa SalamyType: new media postFormat: New MediaNature of Mention: featuredScholar: Singer, Jeffrey A.Research Area: Health, Welfare & EntitlementsSubjects: covid-19 immunity