Risk for Reinfection After SARS-CoV-2: A Living, Rapid Review for American College of Physicians Practice Points on the Role of the Antibody Response in Conferring Immunity Following SARS-CoV-2 Infection.

Background: The strength and duration of immunity from infection with SARS-CoV-2 are important for public health planning and clinical practice.

Purpose: To synthesize evidence on protection against reinfection after SARS-CoV-2 infection.

Data Sources: MEDLINE (Ovid), the World Health Organization global literature database, ClinicalTrials.

Biological measures and diagnostic tools for Gulf War Illness - A systematic review.

Aims: Gulf War Illness (GWI) is a chronic multisymptom illness with debated etiology and pathophysiology. This systematic review catalogues studies of validated biological tests for diagnosing GWI and of associations between biological measures and GWI for their promise as biomarkers.

Main Methods: We searched multiple sources through February 2020 for studies of diagnostic tests of GWI and of associations between biological measures and GWI.

Antibody Response After SARS-CoV-2 Infection and Implications for Immunity : A Rapid Living Review.

Background: The clinical significance of the antibody response after SARS-CoV-2 infection remains unclear.

Purpose: To synthesize evidence on the prevalence, levels, and durability of detectable antibodies after SARS-CoV-2 infection and whether antibodies to SARS-CoV-2 confer natural immunity.

Data Sources: MEDLINE (Ovid), Embase, CINAHL, Cochrane Central Register of Controlled Trials, ClinicalTrials.