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Warnings for epidemics and emerging diseases in the Pacific as of June 4, 2024 – World

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Highlights/updates since the last card was sent on PacNet on May 28, 2024:

Dengue

  • French Polynesia: In Epiweek 21, one new case of dengue was confirmed out of 32 samples tested. On May 29, no new case was reported in EpiWeek 22, bringing the total number of reported cases to 52 (46 confirmed cases and 6 probable cases). No deaths or hospitalizations were reported during this period. The blue alarm is maintained.Source: Polynésie Française Surveillance Bulletin No. 21 -2024 shared with the PPHSN focal point on May 31, 2024.

  • Samoa: In EpiWeek 21, 13 new laboratory-confirmed cases of dengue were reported, bringing the total since November 2023 to 401. No hospitalizations or deaths were reported during this period. The most affected age groups are children under 10 years of age and adults over 60 years of age. Northwest Upolu (NWU) and Apia Urban Area (AUA) are the most affected areas. The serotype results are still pending. Since May 1, weekly numbers of dengue cases have fallen. The red alarm changes to blue. – Source: Samoa Ministry of Health Dengue Fever Outbreak Situation Report #13, EpiWeek 21 – Dengue Fever Outbreak Situation Report in Samoa – Epi Week 21: 20 – 26 May 2024 (Issue #13) – Government of Samoa (samoagovt.ws) accessed June 4, 2024.

Influenza A

  • Commonwealth of the Northern Mariana Islands (CNMI): In Epiweek 21, CNMI reported a decrease in ILI cases from 91 in Epiweek 20 to 60 in Epiweek 21, which represents a 16% decrease compared to the previous three weeks. Tests confirmed 13 cases of influenza A, some of which involved co-infection with Streptococcus (1 case), pneumonia (1 case) and upper respiratory tract infection (URI) (1 case). Other reported respiratory infections include COVID-19 (2 cases), pneumonia (2 cases), Streptococcus (6 cases), parainfluenza virus 3 (1 case), bronchitis (1 case) and upper respiratory tract infection (URI) (9 cases ). The red alarm is maintained. – Source: CNMI Weekly Surveillance Report 2024 – EPI Week 21 shared with the PPHSN focal point on May 30, 2024.

  • French Polynesia: In Epiweek 21, there were 51 new confirmed cases of influenza A from 153 tests conducted. Of the reported cases, 17 were hospitalized, including 1 in intensive care. Since April 1, there have been 302 confirmed cases of flu, with 141 requiring hospitalization and 8 deaths. Fifteen samples sent by the French Polynesia Hospital Center (“Centre Hospitalier Polynésie Française”, CHPF) to the reference laboratory in France, 14 of them correspond to the A/H3N2 subtype. The red alarm is maintained. Source: Polynésie Française Surveillance Bulletin No. 21 -2024 shared with the PPHSN focal point on May 31, 2024.

Leptospirosis

  • Vanuatu: No new cases of leptospirosis were reported from May 6 to June 3, 2024. All cases of leptospirosis have fully recovered. In addition, further confirmation will be performed by the referral laboratory. The last reported cases therefore dated from EpiWeek 19 the red alarm is changed to blue. – Source: Leptospirosis in Vanuatu – SitRep #4: Coverage period from May 21 to June 2, 2024 shared on PacNet on June 4, 2024.

Other information:

Coronavirus disease 2019 (COVID-19)

  • Australia: An increasing number of COVID-19 cases have been reported in recent weeks Australian Capital Territory (May 30, 2024), New South Wales (May 25, 2024), Queensland (May 26, 2024), South Australia (May 31, 2024), Tasmania (May 26, 2024) and Victoria (May 24, 2024). COVID-19 Whole Genome Sequencing data from NSW indicates increasing prevalence of KP.2, KP.3 and KW.1.1, sublineages of JN.1, currently termed ‘FLiRT’ variants and classified as Variants Under Monitoring (VUM) by the WHO.- Sources: ACT COVID-19 Statistics – COVID-19, NSW Respiratory Surveillance – COVID-19 and Influenza – COVID-19 (Coronavirus), Report on surveillance of acute respiratory infections | Queensland Health, COVID-19 dashboard | SA Health, Weekly update – acute respiratory infections activity in Tasmania | Tasmanian Department of Health, Victorian COVID-19 surveillance report | health.vic.gov.au accessed June 4, 2024

  • Hawaii: From May 21 to 27, 745 cases of COVID-19 were reported. The data indicates an increase from 8.5% to 10.5% in the average test positivity rate and 100 average daily COVID-19 cases statewide over the seven-day period. There are an average of 55 hospital admissions and three patients in ICU beds every day. No additional deaths have been reported. Seven-day average daily cases have increased in the four provinces. – Source: Department of Disease Outbreak Control | COVID-19 | State of Hawaii – Department of Health (hawaii.gov), Respiratory viruses | Division of Disease Outbreak Control (hawaii.gov) accessed June 4, 2024

Dengue

  • New Zealand: In Epiweek 22, four cases of dengue fever were reported in New Zealand (two confirmed, one probable and one under investigation). The two confirmed cases had traveled to Indonesia during the incubation period. The likely case had traveled to Singapore. There is no dengue vector in New Zealand, so this figure does not reflect a New Zealand-related risk, but rather a risk to New Zealand travellers. – Source: NZ Arbovirus Notifications by Country (22: 25/05/2024 – 31/05/2024) report shared with PPHSN focal point by ESR on 4 June 2024.

Influenza

  • Samoa: In EpiWeek 21, the number of cases of flu-like illnesses increased compared to the previous week, with 1109 reported cases in EpiWeek 20 compared to 1311 reported cases in EpiWeek 21. However, the number of reported cases remained below the alert threshold, even though Hospital visits due to flu symptoms are still increasing to. The Ministry of Health advises the public to continue preventive measures, including wearing masks, hand hygiene and avoiding large gatherings. – Source: Syndromic Surveillance Report (Epiweek 21: 20/05/24 – 26/05/24) – Syndromic surveillance report Epiweek 21: 20/05/24 – 26/05/24 – Government of Samoa (samoagovt.ws) accessed June 4, 2024

Mpox

Whooping cough

  • New Zealand: As of May 2024, 73 cases of whooping cough have been recorded by the Institute of Environmental Sciences and Research. In the previous month, 22 cases were reported. Noting that whooping cough activity in New Zealand has returned to pre-pandemic baseline levels, with an average of approximately 80 cases per month during non-epidemic periods. – Source: Whooping cough dashboard (esr.cri.nz) accessed an exchange with the ESR contact person on June 4, 2024.
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