Compiled by the ENCLAI research team following a documented methodology · Editorial oversight: Dr Natalya Mathur, Founder · Data last updated: (UTC)

Brucellosis in New Zealand: 2026 cases and outbreak reports

Reported brucellosis surveillance for New Zealand (NZL) — ▼ Declining · 2025 — latest record 2026-10-13

What the 2026 data shows

No brucellosis case count has been reported for New Zealand so far in 2026. The full year 2025 closed at 1 cases. 2025 closed 60% below the 2023–2024 average, which is why the trend reads “Declining”.

ENCLAI has logged 15 surveillance records for brucellosis in New Zealand in 2026, with the most detailed reporting in May 2026 (11 records). 4 of those arrived in the last 30 days. 1 distinct surveillance sources reported this pair in 2026.

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Surveillance summary

2026 cases (YTD)
not reported
2025 cases (full year)
1
Baseline avg (3yr)
N/A
Trend (2025)
▼ Declining · 2025
-60% vs 2023–2024 average

Reported cases by year, New Zealand

YearReported casesShare of worldwide reports
2023 4 0.0%
2024 1 0.0%
2025 1 0.0%
2026 (year to date) not reported —

Reporting bounds and case definitions vary; historical baselines are a separate comparison measure. Worldwide share compares this country's reported figure with the sum of all countries reporting brucellosis to ENCLAI for that year. "Incomplete year" means our sources cover less than ten months of that year, so no full-year figure is shown; "outbreak total to date" is a running total since an outbreak began, not a count for one year.

Surveillance records logged in 2026

MonthRecordsReporting sources
May 2026111
Oct 202641

A record is one dated surveillance publication or one row of an official table; a month with many records is a month with detailed reporting, not necessarily more cases. 4 records were logged in the last 30 days.

Sub-national reporting, 2026

Areas within New Zealand with the most brucellosis records this year:

AreaRecords
Auckland6
Canterbury2
Wellington Region2
Nelson Region1
Waikato Region1

Brucellosis in other countries, 2026

Country2026 casesTrend
China 12,661
Lebanon 166 ▼ Declining · 2025
United States 102 ▲ Rising · 2025
Spain 17 ▲ Rising · 2025
Australia 10

Other diseases reported in New Zealand, 2026

Disease2026 casesTrend
COVID-19 6,909 ▼ Declining · 2025
Campylobacteriosis 2,271 ≈ Stable · 2025
Whooping cough (pertussis) 909 ▲ Rising · 2025
Non-typhoidal salmonellosis 493 ▲ Rising · 2025
Enterohaemorrhagic E. coli (EHEC) infection 469 ≈ Stable · 2025

Questions about this page

How many brucellosis cases has New Zealand reported in 2026?
No brucellosis case count has been reported for New Zealand so far in 2026. The full year 2025 closed at 1 cases. 2025 closed 60% below the 2023–2024 average, which is why the trend reads “Declining”.
Is brucellosis rising or falling in New Zealand?
ENCLAI's trend reading for brucellosis in New Zealand is “Declining · 2025”: the latest complete year is compared with the earlier baseline from the reported counts; the current year is not judged until it closes.

About this data

Figures are reported case counts as published by the originating health authorities, compiled by ENCLAI from 444 verified surveillance sources. New Zealand figures reflect the reporting available to ENCLAI; reporting periods and case definitions differ between sources, and a missing report does not establish zero cases. ENCLAI holds brucellosis records for New Zealand dated from 2017. How we verify and update data: methodology & Trust Center · understanding case counts.

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The daily disease brief

One email a day: what changed in official disease reporting worldwide, with the source named for every number. Reported facts only — no forecasts and no interpretation.

Double opt-in — we send a confirmation link and nothing else until you click it. One-click unsubscribe on every email. See our privacy notice.