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2004 JUN 2 - (NewsRx.com & NewsRx.net) -- Prior infection and passive transfer of neutralizing antibody prevent replication of severe acute respiratory syndrome coronavirus in the respiratory tract of mice.
According to a study from the United States, "Following intranasal administration, the severe acute respiratory syndrome (SARS) coronavirus replicated to high titers in the respiratory tracts of BALB/c mice. Peak replication was seen in the absence of disease on day 1 or 2, depending on the dose administered, and the virus was cleared within a week. Viral antigen and nucleic acid were detected in bronchiolar epithelial cells during peak viral replication.
"Mice developed a neutralizing antibody response and were protected from re-infection 28 days following primary infection," reported Kanta Subbarao and collaborators at the National Institutes of Health and the Centers for Disease Control and Prevention. "Passive transfer of immune serum to naive mice prevented virus replication in the lower respiratory tract following intranasal challenge. Thus, antibodies, acting alone, can prevent replication of the SARS coronavirus in the lung, a ...
Source: HighBeam Research, Passive transfer of antibody prevents SARS replication.