Epidemiological information: human parainfluenza viruses

Figure 1. Weekly distribution of HPIV-1 reports (by specimen date), in England and Wales, 1975-2008

Figure 2. Weekly distribution of HPIV-2 reports (by specimen date), in England and Wales, 1975-2008

Figure 3. Weekly distribution of HPIV-3 reports (by specimen date), in England and Wales, 1975-2008

Figure 4. Weekly distribution of HPIV-4 reports (by specimen date), in England and Wales, 1975-2008

Figure 5. Number of HPIV reports (by specimen date), of all four types by year and age group in England and Wales, 1975-2008