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Fig. 1 | BMC Infectious Diseases

Fig. 1

From: Use of laboratory and administrative data to understand the potential impact of human parainfluenza virus 4 on cases of bronchiolitis, croup, and pneumonia in Alberta, Canada

Fig. 1

Temporal distribution of positive (a) hPIV1 specimens, (b) hPIV2 specimens, (c) hPIV3 specimens and (d) hPIV4 specimens. Only hPIV1 and hPIV3 specimens had peak rates of positivity greater than 5 % when compared to total numbers of specimens tested by RVP. Rates of hPIV2 and hPIV4 specimen positivity were consistently below 1.5 and 2.5 % respectively and were not analyzed for seasonal or yearly trends

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