Which of the following viruses cause most colds?

a. Rhinoviruses
b. Parainfluenza viruses
c. Pneumoviruses
d. Bunyaviruses

검증된 단계별 안내

Understand that the common cold is primarily caused by viruses that infect the upper respiratory tract.

Recall that rhinoviruses are the most common viral agents responsible for the majority of common cold cases.

Recognize that parainfluenza viruses and pneumoviruses can cause respiratory infections but are more often associated with other illnesses like croup or bronchiolitis, not the common cold.

Note that bunyaviruses are generally linked to other diseases such as hemorrhagic fevers and are not typical causes of the common cold.

Conclude that among the options given, rhinoviruses are the viruses that cause most colds.

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주요 개념

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Rhinoviruses and the Common Cold

Rhinoviruses are the primary cause of the common cold, responsible for up to 50% of cases. They are small RNA viruses that infect the upper respiratory tract, leading to symptoms like runny nose and sore throat. Their high variability allows frequent reinfections.

Parainfluenza Viruses

Parainfluenza viruses mainly cause respiratory illnesses such as croup and bronchitis, especially in children. While they can cause cold-like symptoms, they are not the predominant cause of the common cold compared to rhinoviruses.

Pneumoviruses and Bunyaviruses

Pneumoviruses, including respiratory syncytial virus (RSV), primarily cause lower respiratory tract infections, especially in infants. Bunyaviruses are mostly transmitted by arthropods and cause diseases like hemorrhagic fevers, not common colds.

Which of the following viruses cause most colds?a. Rhinovirusesb. Parainfluenza virusesc. Pneumovirusesd. Bunyaviruses