The Epidemiology of Upper Respiratory Infections at a Tertiary Care Center: Prevalence, Seasonality, and Clinical Symptoms

Table 1

Prevalence of respiratory pathogens tested in different age groups: July 1, 2012, to June 30, 2013. Results of 1,286 nasopharyngeal samples analyzed by multiplex real-time PCR in relation to age group.

Analyte	≤2 years		3–6 years		7–21 years		22–49 years		≥50 years		All ages
	Positivity rate	Prevalence; (n = 558)	Positivity rate	Prevalence; (n = 201)	Positivity rate	Prevalence; (n = 257)	Positivity rate	Prevalence; (n = 101)	Positivity rate	Prevalence; (n = 169)	Positivity rate	Prevalence; (n = 1,286)
Rhino/Entero	152	27.2%	75	37.3%	78	30.4%	9	8.9%	13	7.7%	327	25.4%
RSV	141	25.3%	21	10.4%	9	3.5%	1	1.0%	3	1.8%	175	13.6%
hMPV	24	4.3%	10	5.0%	8	3.1%	5	5.0%	5	3.0%	52	4.0%
Para 1	9	1.6%	3	1.5%	3	1.2%	0	0%	0	0%	15	1.2%
Para 2	7	1.3%	6	3.0%	1	0.4%	1	1.0%	0	0%	15	1.2%
Para 3	30	5.4%	2	1.0%	6	2.3%	4	4.0%	2	1.2%	44	3.4%
Para 4	7	1.3%	2	1.0%	1	0.4%	0	0%	0	0%	10	0.8%
Parainfluenza total	53	9.5%	13	6.5%	11	4.3%	5	5.0%	2	1.2%	84	6.5%
CoronaV 229E	0	0%	0	0%	0	0%	0	0%	3	1.8%	3	0.2%
CoronaV HKU1	1	0.2%	0	0%	0	0%	0	0%	1	0.6%	2	0.2%
CoronaV NL63	4	0.7%	2	1.0%	5	1.9%	0	0%	0	0%	11	0.9%
CoronaV OC43	22	3.9%	3	1.5%	2	0.8%	2	2.0%	7	4.1%	36	2.8%
Coronavirus total	27	4.8%	5	2.5%	7	2.7%	2	2.0%	11	6.5%	52	4.0%
Adenovirus	16	2.9%	5	2.5%	3	1.2%	0	0%	1	0.6%	25	1.9%
Influenza A total	28	5.0%	22	10.9%	16	6.2%	4	4.0%	10	5.9%	80	6.2%
FluA/H3	28	5.0%	19	9.5%	15	5.8%	3	3.0%	9	5.3%	74	5.8%
FluA/2009 H1	0	0%	3	1.5%	1	0.4%	1	1.0%	1	0.6%	6	0.5%
Influenza B	3	0.5%	6	3.0%	7	2.7%	4	4.0%	5	3.0%	25	1.9%
C. pneumoniae	1	0.2%	0	0%	0	0%	0	0%	0	0%	1	0.08%
M. pneumoniae	4	0.7%	2	1.0%	1	0.4%	0	0%	1	0.6%	8	0.6%
B. pertussis	1	0.2%	0	0%	0	0%	0	0%	0	0%	1	0.08%
Total positive: one or more analytes	390	69.9%	145	72.1%	131	51.0%	30	29.7%	50	29.6%	746	58.0%