Table 1.

VIRUSES REPORTED TO CAUSE COMMON COLDS

Virus	Notes	Monto and Sullivan 52 Relative Frequency (%)	Dowling and Lefkowitz 17 Relative Frequency (%)	Denny 16 Relative Frequency (%)	Hague et al 27 Relative Frequency (%)
Rhinoviruses		52	27–35	10	16
Type 21	More than 100 types  of rhinoviruses  identified	e.g., Rhinoviruses caused  colds 52% of the time		Study of children only
25				14	HIV-exposed children  younger than age 2
39
HH	Approximately 30  types account for  most colds
S
22
51	Antigenic variants of  these two types  found in Wisconsin  students
43
55
80 types	Identified during the Tecumseh study
Coronaviruses		21
Type oc43	Both found in  Tecumseh study
229E
Echoviruses
Type 28	—	2	26-35	—	2
22
20
Coxsackievirus
Type A21	Associated with  pleurisy and cervical  myalgia and  herpangina	2	15	—	4
RSV Type B	More mild disease at  all ages	8	10	10	8
Parainfluenza
Type 3	—	10	17	24	10
1				12
				8
				4
Adenoviruses
Types 1, 4, & 7	Also have pharyngitis  and conjunctivitis	5	—	22	10
2	Also cause laryngitis  and headache and  pharyngitis			4
5				8
3				9
HH and S = older classification systems for rhinovirus subtypes; RSV = respiratory syncytial virus.