The Moscow Times reports, citing the Kremlin, that Russia properly informed WHO about 1 death, media-reported and unverified, involving an employee of the Irkutsk Anti-Plague Research Institute in Irkutsk Oblast. The report does not change the public picture from earlier media reports: Irkutsk media had already cited 1 death, media-reported and unverified, and no confirmed plague cases, media-reported and unverified. The new element is the Kremlin's statement that WHO was notified about the death.
Kenyan media reports are conflicting on the Bundibugyo Ebola situation. Business Today says, citing Kenya's health ministry and Nairobi Hospital, that Kenya had 1 confirmed case, media-reported and unverified, 1 death, media-reported and unverified, and 28 contacts under observation, media-reported and unverified, but the same report also says the ministry stated there were no confirmed cases. Legit.ng separately cites WHO Africa at 7,890 confirmed cases, media-reported and unverified, and 3,799 deaths, media-reported and unverified, in the DRC, and cites the DRC government at 3,200 confirmed cases, media-reported and unverified, and 1,405 deaths, media-reported and unverified.
Identidad Latina reports, citing Nicaragua's Ministry of Health, that the country has 3304 confirmed chikungunya cases, media-reported and unverified, up from 3109 confirmed cases, media-reported and unverified, in an earlier report. The same outlet says the ministry logged +306 confirmed cases, media-reported and unverified, in the latest week, after earlier weekly increases of +221 confirmed cases, media-reported and unverified, and +199 confirmed cases, media-reported and unverified. CDC has already posted a Level 2 travel notice for chikungunya in Nicaragua.
IrkutskMedia reports, citing Rospotrebnadzor, that there are no confirmed plague cases in Irkutsk Oblast, a media statement, while the same report refers to 1 death, media-reported and unverified, at Shelekhov district hospital. That leaves the public picture unchanged from earlier media reports that also described a fatal pneumonia case linked to the Irkutsk Anti-Plague Research Institute but no confirmed plague infections. The new report says some countries have taken measures over the Irkutsk incident, according to the outlet.
Teletica reports, citing Costa Rica's Ministry of Health, that the hepatitis A outbreak has reached 772 confirmed cases, media-reported and unverified. That adds a case count after CDC said officially that Costa Rica has a hepatitis A outbreak with most cases in San José province and posted a Level 1 travel notice. The Teletica report is about liver health and includes the ministry tally for the outbreak.
The UK's TravelHealthPro says the Democratic Republic of the Congo has reported 8,603 confirmed Ebola cases, official, and 4,148 deaths, official, as of 4 October 2026. That is up from 7,890 confirmed cases, official, in WHO's 23 September baseline. The same UK service says Kenya reported its first confirmed Ebola case, official, on 6 October, imported from the DRC, with contact tracing under way. CDC has also posted travel notices for Uganda and for affected provinces in the DRC as the Bundibugyo virus outbreak continues across borders.
The UK's TravelHealthPro says Nigeria has reported 16,997 diphtheria cases, official, and 596 deaths, official, between 1 January and 23 August 2026. It says most cases were reported in Kano, Bauchi, Katsina, Borno and Sokoto states. CDC's travel notice says there are diphtheria outbreaks in several countries in Africa, placing the Nigeria figures within a broader sub-Saharan Africa outbreak. The travel notices do not give a newer cross-region case count.
Media reports, citing the governor of Irkutsk Oblast and other Russian authorities, say there are no confirmed plague cases linked to the Irkutsk Anti-Plague Research Institute. The same reports put 189 people hospitalised, media-reported and unverified, down from 200 people hospitalised, media-reported and unverified, in earlier media reports, and refer to 1 death, media-reported and unverified. The Moscow Times and Echo also say WHO has asked Russia to clarify reports that a second institute employee developed pneumonia.
CDC says there is a hepatitis A outbreak in Costa Rica and that most cases have been reported in San José province. The agency has posted a Level 1 travel notice for the outbreak. The notice does not give an official case count, but it is the clearest new official statement here on where the outbreak is concentrated. Costa Rica is also under a separate CDC travel notice for chikungunya in the northwest of the country, which is unrelated to the hepatitis A outbreak.
WHO's FluNet surveillance series shows official influenza test positivity in Africa at 18.5 % of specimens positive, weekly, against an official baseline of 12.3 % of specimens positive, weekly, since 2026-10-06. WHO classifies the change as a spike in regional surveillance for Africa. This is the current official signal from the WHO FluNet platform for the continent, which tracks influenza laboratory testing trends reported by participating countries.
Media reports, unverified, put mpox at 100814 confirmed cases, 1 suspected case and 2 deaths across the latest worldwide accounts. A Medical Xpress report on a University of Surrey study says the 2022 outbreak reached 100000 confirmed cases worldwide. Separate media reports cite South Africa's Department of Health at 18 confirmed cases and 1 suspected case, with 15 in Western Cape, 3 in Gauteng and 1 in KwaZulu-Natal, and cite health authorities in Angola at 796 confirmed cases and 2 deaths. WHO's broader global risk framing remains unchanged.
Media reports, unverified, say Bangladesh's Directorate General of Health Services recorded +10 dengue deaths and +1996 hospitalised in a day, bringing the country's totals to 281 deaths and 90356 hospitalised. Separate media reports, also unverified, cite WHO at 14600000 confirmed cases worldwide and the CDC at 485 confirmed cases in Florida, including 223 in Hillsborough County. Florida health officials were also cited at 250 confirmed cases or 252 confirmed cases in statewide reports, and at 1 death in Tampa. WHO's latest formal global assessment available here still says dengue risk is high worldwide.
Media reports, unverified, say Gaza's health ministry has reported no confirmed polio cases in the Gaza Strip while warning cases are "very likely" in the population. The report does not give a suspected-case count or any laboratory-confirmed infections. WHO's broader position has not shifted in the available official material: the international spread of poliovirus remains under the long-running emergency framework because both wild poliovirus type 1 and circulating vaccine-derived polioviruses continue to appear where immunity is patchy.
Media reports, unverified, cite Colombia's Instituto Nacional de Salud as reporting 58 confirmed yellow fever cases and 27 deaths this year, alongside 1183 suspected cases nationwide. The same report also cites the institute at 206 confirmed cases and 86 deaths overall in Colombia, and says Chaparral had 21 confirmed cases, followed by Icononzo with 8 and Cunday with 7. Separately, the US CDC has posted a Level 2 travel notice saying an increased number of yellow fever cases have been reported in Colombia.
Media reports, unverified, cite Nicaragua's Ministry of Health at 3109 confirmed chikungunya cases in 2026, with 2122 of those cases detected in the previous six weeks. Subsequent media reports, also unverified, say the ministry recorded +199 cases in one week and later 221 cases in a week. The US CDC has posted a Level 2 travel notice for chikungunya in Nicaragua, saying there is an outbreak in the country.