Countries: World, American Samoa, Canada, Cook Islands, French Polynesia (France), Kiribati, Mayotte (France), New Caledonia (France), New Zealand, Palau, Réunion (France), Samoa, Tonga, United States of America Source: Pacific Community Please refer to the attached Map. Highlights/updates since the last map was sent on PacNet on 1 July 2025:DengueCook Islands: The Ministry of Health has officially declared a dengue fever outbreak in Rarotonga on 22 May 2025. Since February, there have been 50 dengue cases reported. Of these, 44 individuals have fully recovered while 6 cases remain active. Twelve cases required hospitalisation with 10 now discharged. Of the twenty-seven samples with confirmed serotypes, twenty-four were Dengue Virus Type 1 (DENV-1) and three were Dengue Virus Type 2 (DENV-2), indicating co-circulation of DENV-1 and DENV-2. Clean-up campaigns and peri-focal spraying are being carried out in hot spot areas, alongside ongoing risk assessments. The public is urged to eliminate mosquito breeding sites, use repellents, wear long sleeves, and seek medical care if symptoms appear. The red alert for DENV-1 and DENV-2 is maintained. – Sources: Cook Islands 2025 Dengue Outbreak, Situation report #20 (2 July 2025) shared with focal point on 7 July 2025.French Polynesia: In EpiWeek 26, 36 new dengue cases (31 confirmed and 5 probable) were reported. Since November 27, 2023, a total of 2,364 cases have been recorded, including 2,125 confirmed and 239 probable cases. Zero hospitalisations were reported in EpiWeek 26. The positivity rate increased, and hospitalisation rate decreased compared to EpiWeek 25. The blue alert for DENV-1 is maintained. – Source: Bulletin de surveillance sanitaire de Polynésie française n°24- 2025 shared with focal point on 8 July 2025.Kiribati: The Ministry of Health confirmed a dengue outbreak on 24 April 2025, after a significant rise in confirmed cases. As of 9 June 2025, the Health Ministry reported a total of 96 dengue confirmed cases and 383 suspected dengue cases with forty-two cases admitted, of which thirty-nine have now been discharged. Dengue cases range in age from 1 month to 95 years, with the most affected group being those aged 3 to 9 years. Among all reported cases, 53% are female and 47% male. The serotypes that are responsible for this current outbreak are Dengue Virus Type 1 (DENV-1) and Dengue Virus Type 2 (DENV-2), tested at VIDRL in Melbourne. The Ministry of Health is actively promoting health awareness on social media through posters, press releases, and videos. It continues to investigate cases, conduct house-to-house inspections in high-risk areas, eliminate mosquito breeding sites, and advise community members to maintain a clean and healthy environment. A red alert for DENV-1 and DENV-2 is added. – Source: Dengue Fever Situational Report #11 (7 July 2025) shared with focal point on 8 July 2025.Samoa: As of 30 June 2025, the Ministry of Health reported 140 lab-confirmed dengue cases in EpiWeek 26 (23 – 29 June 2025) bringing the total number of confirmed cases to 703 and one reported death since the declaration of the outbreak on 17 April 2025. The majority of cases (82%) are from Upolu Island, with 55% male and 45% female. Most cases are distributed across the Apia Urban Area and North West of Upolu regions, with individuals under 20 years old (86%) being the most affected. 11% of cases required hospitalisation, and of these admissions, 96% have been discharged. Of the 20 cases with confirmed serotypes, 85% are DENV-1 and 15% are DENV-2. The Ministry of Health continues collaboration across sectors through a whole-of-government approach via the Integrated Vector Control Committee. Current response efforts are focused on source reduction and environmental sanitation measures, ongoing risk communication on dengue preventative measures on all media outlets while urging the public to wear long-sleeved clothing to minimize risk of infection, use mosquito nets and repellents, remain vigilant for severe symptoms and to seek medical attention immediately when necessary. The red alert for DENV-1 and DENV-2 is maintained. – Source: Dengue Fever Situational Report #11 (30 June 2025) shared with focal point on 4 July 2025.Tonga: As of 4 July 2025, the Ministry of Health reported five new dengue cases, bringing the total confirmed cases to 889 since the declaration of the Outbreak on 19 February 2025, primarily affecting 10-19-year-olds. To date, three dengue-related deaths have been reported, with no patients currently hospitalised. Authorities continue case investigations, vector control at hot spot areas and public awareness efforts, urging residents to eliminate breeding sites, use protective measures, and seek medical attention for severe symptoms. The serotype that is responsible for this current outbreak is Dengue Virus Type 2 (DENV-2) identified by the Victorian Infectious Diseases Reference Laboratory (VIDRL), Melbourne Australia. The red alert for DENV-2 is maintained. – Source: Dengue Fever Outbreak, Situation report #64 (4 July 2025) shared with focal point on 4 July 2025.InfluenzaFrench Polynesia: In EpiWeek 26, 5 new influenza cases (1 type A, 4 type B) were reported including three hospitalisations. Since EpiWeek 03 2025, 584 influenza cases were reported with a total of 192 hospitalisations and twelve deaths. The positivity rate increased, and hospitalisation rate remains stable during this reporting period. Influenza B is the predominant strain in circulation. The blue alert for influenza B is maintained. – Source: Bulletin de surveillance sanitaire de Polynésie française n°24 - 2025 shared with PPHSN Coordinating Body focal point on 8 July 2025.Pertussis/Whooping coughNew Zealand: As of week ending on 27 June, weekly pertussis cases in New Zealand increased to 50 from 35 in week ending on 20 June, bringing the total reported cases since the beginning of 2025 to 1,550. According to the latest report from the New Zealand Institute for Public Health and Forensic Science (PHF Science), 2,635 confirmed, probable and suspect cases have been notified since the start of the national epidemic on 19 October 2024. Of these, 233 cases (9.2%) have required hospitalisation with one reported death. 108 (49.1%) out of the 222 cases in infants under 1 year are hospitalised. The blue alert is maintained. – Sources: Pertussis dashboard and Pertussis Report 31 May–27 June 2025 accessed on 8 July 2025.Other Information:ChikungunyaRéunion Island and Mayotte: The ongoing chikungunya epidemic in Réunion Island is decreasing with the virus circulating in limited municipalities. Since the beginning of the year, 54,233 confirmed cases, 2,850 visits to the emergency room, 577 hospitalisations and 28 deaths linked to chikungunya have been reported. The vaccination campaign which began on April 07 remains available for those aged 18 to 64 with comorbidities. Health Authorities emphasize monitoring for allergic reactions within 72 hours of vaccination and seeking immediate medical attention if symptoms occur. Health authorities are urging heightened vigilance for travellers to La Réunion, visitors are advised to take preventive measures against mosquito bites, including the use of insect repellent, wearing long-sleeved clothing, and staying in accommodations with screened windows or air conditioning. In Mayotte, the chikungunya virus is actively circulating, with 1,098 confirmed cases and thirty-eight hospitalisations since the beginning of the year. Returning travelers may pose a risk of introducing chikungunya to other regions, where Aedes mosquito vectors are present. It is recommended that returning travellers from Indian Ocean islands monitor for symptoms (fever, joint pain, rash) for up to two weeks and seek medical attention if symptoms arise. - Sources: Chikungunya : Les autorités sanitaires retirent les personnes de 65 ans et plus des cibles de la campagne de vaccination contre le chikungunya avec le vaccin IXCHIQ à La Réunion et à Mayotte, Chikungunya et dengue à Mayotte. Bulletin du 4 juillet 2025 and Chikungunya à La Réunion : semaine du 23 au 29 juin 2025 accessed on 8 July 2025.DengueAmerican Samoa: The American Samoa Department of Health issued a travel health alert for dengue following the confirmation of three imported cases of dengue fever in travellers who recently returned from Samoa where dengue activity is currently ongoing. The presence of dengue in travellers returning from affected countries increases the risk of dengue virus being introduced and spread locally by mosquitoes. Travellers are advised to monitor their health for 14 days upon returning and to seek medical care if symptoms develop. The public are urged to protect themselves from mosquito bites, eliminate breeding sites and allow environmental teams to conduct spraying and inspections. Source: American Samoa Department of Health Dengue Alert accessed on 8 July 2025.LeptospirosisNew Caledonia: New Caledonia is experiencing a resurgence of leptospirosis, with 129 cases confirmed as of 30 June 2025. Among these, 113 required hospitalisations, including 77 patients in intensive care under continuous monitoring. The increase in cases is attributed to heavy rainfall and delays in diagnosis, with most cases occurring in rural areas. The government urges vigilance and rapid treatment to prevent severe forms of the disease. Source: Alerte Leptospirose accessed on 8 July 2025.MeaslesUnited States: In the United States, the CDC reported a total of 1,267 measles cases across 38 U.S. jurisdictions, as of 1 July with 89% of these cases linked to twenty-seven outbreaks. The majority of cases are among unvaccinated individuals (92%), and 12% of the cases have resulted in hospitalization. There have been three confirmed deaths. The 38 jurisdictions that have reported measles cases are as follows, Alaska, Arkansas, Arizona, California, Colorado, Florida, Georgia, Hawaii, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Michigan, Minnesota, Missouri, Montana, Nebraska, New Jersey, New Mexico, New York City, New York State, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, and Washington. - Source: Measles Cases and Outbreaks accessed on 8 July 2025.Canada: In Canada, for EpiWeek 26 (22 – 28 June 2025) there has been 178 new measles cases (178 confirmed) bringing the total to 3,703 cases (3,393 confirmed, 310 probable) across nine jurisdictions. The jurisdictions are as follows Alberta, British Columbia, Manitoba, Northwest Territories, Nova Scotia, Ontario, Prince Edward Island, Quebec, Saskatchewan. - Source: Measles and rubella weekly monitoring report accessed on 8 July 2025.Pacific Mini Games 2025Palau: In the Pacific Mini Games held in Koror, Palau, from 29 June to 9 July 2025, and attended by athletes from 23 Pacific nations, a confirmed dengue case was reported which prompted immediate field response and environmental inspections. Enhanced surveillance activities were initiated on 26 June 2025, with 456 consultations recorded of which 55 were syndromic alerts. Of these, 58% have been classified as influenza-like illness (ILI), 20% Acute Gastroenteritis (AGE) and 11% attributed to conjunctivitis. In addition, a total of 275 injuries were recorded consistent with participation in high-intensity sporting activities. With the conclusion of the games on 9 July 2025, the enhanced surveillance activities continue. Athletes, staff, and community members are advised to seek medical attention promptly if symptoms develop, especially as participants return to their home countries. – Sources: MHHS reports one dengue fever case among athletes and Enhanced Surveillance Pacific Mini Games, Palau 2025, Situation report #10 (8 July 2025) shared with PPHSN Coordinating Body focal point on 8 July 2025.