Methods This descriptive cross-sectional study was approved by the Khyber Medical
University (KMU) Ethical Committee. Due to retrospective nature of our analysis, we were …

Objectives Due to a substantial proportion of asymptomatic and mild courses, many severe
acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections remain unreported …

Background Reinfection with the severe acute respiratory syndrome coronavirus 2 (SARS-
CoV-2) has been documented, raising public health concerns. SARS-CoV-2 reinfections …

In March 2020, mild signs and symptoms of coronavirus disease developed in a healthy 33-
year-old man in Hong Kong. His first infection did not produce virus neutralizing antibodies …

The 2019 novel coronavirus (2019-nCoV, now designated as severe acute respiratory
syndrome coronavirus 2, SARS-CoV-2) outbreak has posed a severe threat to public health …

ABSTRACT SARS-CoV-2 reinfection rate is low. The relative severity of the first and second
episodes of infection remains poorly studied. In this study, we aimed at assessing the …

Objectives To investigate serological differences between SARS-CoV-2 reinfection cases
and contemporary controls, to identify antibody correlates of protection against reinfection …

Background The novel coronavirus SARS-CoV-2 is a newly emerging virus. The antibody
response in infected patients remains largely unknown, and the clinical value of antibody …

Background Reinfection with the severe acute respiratory syndrome coronavirus 2 (SARS-
CoV-2) has been documented, raising public health concerns. Risk and incidence rate of …

Liu et al. in this Journal recently reported a COVID-19 patient with prolonged viral shedding
even after seroconversion. 1 The patient's antibody to SARS-CoV-2 viral nucleocapsid (N) …