Viruses Detection
The proportion of patients who had specific viruses detected is shown in
Table 1. Overall, 904 patients had influenza detected, 1,667 had RV/EV
detected, and 2,551 had non-influenza, non-RV/EV respiratory viruses
detected. The relative proportion of each virus was similar in year 1
vs. year 2 with the exception of the influenza viruses (A H1, A H3, and
B) and the human coronavirus types. Influenza A H3 and influenza B were
most common in year 1, while influenza A H1 and influenza A H3 were most
common in year 2. The cumulative proportion of all coronaviruses was
similar in both years, but seasonal differences occurred in the relative
proportions of CoV229E, CoVHKU1, and CoVOC43 as illustrated in Figure 1.
In year 1, CoVHKU1 was most common and had a sharp winter peak. In year
2, CoV229E peaked in winter, but continued to be detected throughout the
spring.
Overall, co-detection of two or more respiratory viruses occurred in 251
patients. In year 1, 116 (5.7%) of 2,043 patients had co-detection and
RV/EV was detected in 46 (39.7%) of these 116 co-detections. In year 2,
135 (6.2%) of 2,189 patients had co-detections and RV/EV was detected
in 72 (53.3%) of these 135 co-detections. Among the 251 total
co-detections, an Influenza virus and a non-influenza virus were
detected in 67 (26.7%).