The Health Information & Quality Authority (HIQA) has said that the duration of immunity following Covid-19 infection should be considered to be six months. In a review of the evidence published today, HIQA says that the current guidance, that immunity following infection lasts for three months, should be extended to six months.
HIQA said that advice to NPHET has implications for a number of policy areas, including exemption from close contact status, serial testing in selected work settings, and testing prior to admission to, or transfer from, a healthcare facility.
The studies HIQA examined were all conducted prior to December 2020. As a result, it said the application of the findings to the new strains and vaccinated populations is unknown.
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