Data is representative of all patients attending a hospital (public or private) in Western Australia, for which a respiratory sample was collected and tested at a PathWest laboratory.

PathWest Paediatric Respiratory Pathogen Report – 18/03/2020 Page 1 of 4 Microbial Surveillance Unit PathWest_Micro_Surveillance@health.wa.gov.au

Paediatric Respiratory Pathogen Report

Week 11, 9th February – 15th March 2020

• RSV proportion positive (8%) was similar to levels historically observed at this time of year.

• There were nine paediatric cases of RSV and three paediatric cases of influenza this week.

• There were no paediatric cases of COVID-19 this week.

Figure 1: The current season plotted against the Paediatric RSV Average Epidemic Curve. The average epidemic curve was constructed by

averaging all seasons measured at PathWest QE2 from 2007-2018. The high intensity threshold is 1.645 standard deviations above (upper 90%

CI) the average epidemic curve. Data represents all WA hospitalised and ED paediatric patients tested by PathWest.

RSV proportion positive (8%) is similar to levels historically observed at this time of year.

Data is representative of all patients attending a hospital (public or private) in Western Australia, for which a respiratory sample was collected and tested at a PathWest laboratory.

PathWest Paediatric Respiratory Pathogen Report – 18/03/2020 Page 2 of 4 Microbial Surveillance Unit PathWest_Micro_Surveillance@health.wa.gov.au

Figure 2: Proportion positive (RSV & influenza) or cases (other respiratory pathogens) for the current week (red line) plotted against the

historic range (grey box) and median (black line) for this week. Pie charts represent the breakdown of influenza subtypes and the count of

other respiratory pathogens. Data represents hospitalised and ED paediatric patients tested by PathWest. Historic data is for years 2007-2019.

Please note: Due to the escalation of rapid PCR testing, the number influenza and RSV positive samples which do not receive a subtyping test

has increased.

RSV proportion positive (8%) was similar to the historic median (8%) for this week. There were nine

paediatric cases each of RSV. Of those, four were RSV A and five are yet to be subtyped. There were three

paediatric cases of influenza. Of those, one was influenza A/H3, one was influenza B and one was influenza

A yet to be subtyped. Other respiratory virus detections were higher than the historic median for this week.

Data is representative of all patients attending a hospital (public or private) in Western Australia, for which a respiratory sample was collected and tested at a PathWest laboratory.

PathWest Paediatric Respiratory Pathogen Report – 18/03/2020 Page 3 of 4 Microbial Surveillance Unit PathWest_Micro_Surveillance@health.wa.gov.au

Figure 3: Hospitalised paediatric patients with RSV in Perth metropolitan region, in both Kimberley and Pilbara combined and in the remaining

regions combined.

There were seven paediatric RSV cases from the Metropolitan region and two from the Kimberley.

Figure 4: Paediatric and adult hospitalised patients with RSV, 2017-2020

There were nine children and four adults with RSV who attended a hospital.

Data is representative of all patients attending a hospital (public or private) in Western Australia, for which a respiratory sample was collected and tested at a PathWest laboratory.

PathWest Paediatric Respiratory Pathogen Report – 18/03/2020 Page 4 of 4 Microbial Surveillance Unit PathWest_Micro_Surveillance@health.wa.gov.au

Figure 5: Hospitalised paediatric patients with influenza in the Perth metropolitan region, in both Kimberley and Pilbara combined and in the

remaining regions combined.

There were two paediatric influenza cases from the Metropolitan region and one from the Goldfields.

Figure 6: Paediatric and adult hospitalised patients with influenza, 2017-2020.

There were three children and 11 adults with influenza who attended a hospital.