Immunity

CDC guidance for health departments conducting reinfection-related public health investigations.

CDC protocol for conducting reinfection-related public health investigations.

Article published in The Lancet Infectious Diseases describing a Nevada patient who had two positive tests for SARS-CoV-2 separated by two negative tests.

Among 627 people with SARS-CoV-2 infection across 75 SNFs since vaccination clinics began, 22 infections were identified among 12 residents and 10 staff members across 15 facilities ≥14 days after receiving their second vaccine dose (i.e., breakthrough infections in fully vaccinated persons), according to this CDC MMWR.

CDC summary of evidence and additional considerations used to inform public health recommendations for fully vaccinated people.

An expert overview published in Immunity describing the basic concepts of herd immunity and implications during the pandemic.

JAMA Insight on herd immunity and its implications during COVID-19.

Commentary published in The Lancet Infectious Diseases summarizes four cases that show evidence of COVID-19 reinfection and outlines questions to guide further research.

Article in Clinical Infectious Diseases describing a previously infected Dutch patient who showed COVID-19 symptoms again following chemotherapy.

Patient-facing JAMA article that includes an infographic.

Webinar recording featuring case presentations by experts in the field.