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The coronaviruses.

Developments in Biological Standardization

|January 1, 1975

Summary

This summary is machine-generated.

Human coronaviruses cause adult respiratory illnesses, but their role in children is unclear. Recent advances improve coronavirus propagation and detection, aiding understanding of these important respiratory pathogens.

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Area of Science:

Virology
Infectious Diseases

Background:

Human coronaviruses are recognized causes of adult acute upper respiratory tract illnesses.
Their role in pediatric respiratory infections remains less certain.
Since 1965, only 31 additional human coronavirus strains have been identified.

Observation:

Coronaviruses exhibit fastidious growth requirements, necessitating volunteer studies and seroepidemiology for clinical understanding.
These viruses are linked to a significant proportion of adult respiratory illnesses, particularly when rhinovirus infections are infrequent.
Recent progress includes successful virus recovery in specific cell cultures and adaptation to animal models.

Findings:

Viruses antigenically related to prototype strain 229E were recovered from patients with upper respiratory tract illnesses.

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Specific strains (B814, LP, EVS) were isolated from nasal washings.

OC43 and OC38 viruses demonstrated hemagglutination and adaptation to cell cultures and suckling mice, with OC43 inducing hemadsorption.

Implications:

Improved methods for coronavirus propagation and detection are advancing the study of these pathogens.
Understanding coronavirus infections is crucial for managing respiratory illnesses in both adults and potentially children.
Coronaviruses are also implicated in animal diseases, suggesting broader zoonotic potential.