NPC provided risk assessment and management advice to more than 1,000 exposure events per quarter for children under the age of 15 years.
The exposure rate has remained relatively stable between 2017–2019 (Figure 1).
Figure 1: Unintentional hazardous substance exposure events for children under the age of 15 years, by year/quarter (crude rate per 100,000)
‘Household anti-infective/cleaners’ were the most common substance category reported to NPC in children aged one year
One-year-olds may be at greater risk of acute ‘household anti-infective/cleaners’ exposures because they are more likely to put things in their mouth and spend time on the floor, where many cleaners are used or may be found. Children aged one year were more than twice as likely as children aged two years to be exposed to hazardous substances from ‘household anti-infective/cleaners’ (eg, toilet bowel disc, household bleach, multi-purpose cleaner, sanitiser) (Figure 2).
Figure 2: Unintentional hazardous substance exposure events, by top four substance categories and age group, 2017–2019 (crude rate per 100,000 population)
The top three substances reported to the NPC were dishwashing liquid, toilet bowl discs and essential oils
Dishwashing liquids were the most common substances ingested unintentionally by children aged 0–14 years (645 out of 14,077 total exposures), followed by toilet bowl discs (637 exposures) and essential oils (574 exposures; Figure 3). Approximately 93% of the exposures occurred in the home environment.
Figure 3: Unintentional hazardous substance exposure events by top four classifications, top 20 substance names, 2017–2019
Children of European/Other ethnicity had the highest reported rates of exposures
The rate (504.2 per 100,000) in the use of the NPC service for European/Other children was twice the rate of 252.9 per 100,000 for Māori children (Figure 4).
Figure 4: Unintentional hazardous substance exposure events, by prioritised ethnicity, 2017–2019 (crude rate per 100,000 population)
Eighty-seven percent of the exposures did not require a medical assessment
From 2017 to 2019, a total of 14,077 (87%) paediatric patients aged 0–14 years were given advice for self-treatment or that no treatment was required, while 246 (2%) cases required more information before definite advice could be given. A total of 1,513 patients (11%) were referred for medical assessment.
Substances that children may potentially be exposed to at home have different risk profiles for causing harm. Exposures to some substances present more risk than others. For example, the highest proportion of medical referrals per substance category was for paediatric patients who had ingested clove oil (80.0% referred), followed by drain cleaners (54.5%) and hair dyes (25.7%; Table 1).
Table 1: Unintentional hazardous substance exposure events, by classification break down, medical referral status, 2017–2019
Information about the data
Unintentional hazardous substances exposures in children (0–14 years); calls to the National Poisons Centre in 2017–2019
Source: National Poison Centre 2020
Definition: The number of substances exposure calls to the New Zealand National Poisons Centre involving unintentional exposures to hazardous substances in children aged 0–14 years. In the context of poison centres, ‘exposure’ refers to any route of contact (eg, ingestion, inhalation, dermal, etc) between a person and a substance.
For more information about the data, see the metadata
1.Safekids Aotearoa, Position Paper: Child Poisoning Prevention. Auckland, Safekids Aotearoa, 2015.
2.National Poisons Centre. 2021. Preventing poisoning in the home. URL: https://poisons.co.nz/articles-and-info/common-poisons-around-the-home/view/preventing-poisoning-in-the-home/ (accessed 5 March 2021).