Prevalence of antibodies to four human coronaviruses is lower in nasal secretions than in serum.
Gorse
Geoffrey J
GJ
Division of Infectious Diseases and Immunology, Saint Louis University School of Medicine, 1100 South Grand Boulevard, St. Louis, MO 63104, USA. gorsegj@slu.edu
Patel
Gira B
GB
Vitale
Joseph N
JN
O'Connor
Theresa Z
TZ