In an update dated July 31, 2026, the CDC said no Ebola cases associated with the outbreak had been reported in the United States. It said the overall risk to the American public and travelers remains low, while noting that an imported case could have serious consequences.

The federal response is intended to reduce the chance that an infected traveler enters the country and to identify a possible case quickly. The CDC says the likelihood of Ebola spreading to the United States is very low. If a case were identified, the risk of wider spread would also be low because of U.S. public-health and infection-control capacity.

What measures remain in place

On May 18, the CDC, the Department of Homeland Security and other federal agencies implemented public-health entry screening, targeted entry restrictions and related measures.

The CDC says an order issued July 13 continued the suspension of entry for specified foreign nationals for a stated period of 30 days. That measure is not a universal travel ban. Separately, CDC traveler-management guidance covers people arriving from or transiting through the Democratic Republic of the Congo, Uganda and neighboring South Sudan.

Federal public-health staff conduct an initial assessment of some air passengers who arrive from or transit through those countries and are redirected to a U.S. airport designated for public-health entry screening. Health departments receive traveler information, provide health education and determine whether additional assessment or monitoring is appropriate.

What the 21-day period means

The monitoring period lasts 21 days after a traveler leaves an affected country or area of concern. It is not an automatic quarantine for every traveler.

Follow-up depends on the person’s location, activities and potential exposure. Travelers who were in an area of concern without a high-risk exposure are advised to self-monitor, including taking their temperature daily, and to notify their health department if symptoms develop. People who had situations with exposure potential may receive regular health-department monitoring during the 21-day period.

Travelers who were in an affected country but outside an area of concern, including those who only transited through an airport, generally receive an initial assessment and may receive an additional check-in. CDC’s guidance lists no movement restrictions for asymptomatic travelers without high-risk exposures, although it advises travelers to coordinate with health departments before leaving their jurisdiction and to reconsider international or cruise travel during the monitoring period.

What returning travelers should do

Anyone who develops symptoms compatible with Bundibugyo virus disease within 21 days of leaving an affected area should separate from others, avoid travel and contact the relevant health department or health-care provider for instructions. Before going to a medical facility, the person should call ahead and disclose the recent travel.

Recent travel alone does not establish Ebola infection. CDC guidance says testing decisions should consider symptoms together with the person’s travel history, activities and possible exposure to infected people, body fluids, health-care settings, funerals, wildlife or other risk factors.

What clinicians and health departments are expected to do

Clinicians should ask about recent international travel and exposure history when evaluating a patient with compatible symptoms. If Bundibugyo virus disease is suspected, CDC advises placing the patient in isolation at the presenting facility, using recommended infection-control precautions and contacting the appropriate health department immediately.

Health departments coordinate patient assessment, specimen collection and testing with the clinical team and CDC. They also help determine whether a patient needs evaluation at a facility equipped to manage a suspected viral hemorrhagic fever and coordinate transportation and infection-control precautions when necessary.

Bundibugyo virus disease is a type of Ebola disease caused by the Bundibugyo virus. It is different from the Ebola virus species targeted by the U.S.-licensed ERVEBO vaccine. CDC guidance says no vaccine or specific treatment has been approved for Bundibugyo virus disease, although early supportive care can improve the chance of survival.

For most people in the United States, the practical message remains that the current risk is low. The continuing screening and monitoring measures show that the federal response is still active because preventing an imported case and detecting one quickly are central to keeping that risk low.

Sources

• CDC: Interim Traveler Management Guidance

The infection was reported in Congo, not the United States. In its July 17, 2026, situation summary, the Centers for Disease Control and Prevention said no cases associated with the outbreak had been confirmed in the United States and that the overall risk to the American public and travelers remained low.

The CDC was coordinating with the person’s employer, U.S. agencies, Congolese public-health authorities and other partners to prevent further transmission and identify close contacts, according to the Associated Press. The outbreak involves Bundibugyo virus, a type of Ebola virus distinct from the species involved in some earlier outbreaks.

Why CDC says the U.S. risk remains low

Federal health officials distinguish between the likelihood of an Ebola case arriving in the United States and the potential consequences if infection occurs. The CDC’s June 11 risk assessment rated the risk to the U.S. population as low over the following three months. Its current situation page says the likelihood of importation and sustained spread in the United States remains very low.

That assessment does not mean the disease would have limited consequences. The CDC says the potential impact of infection is high, while also pointing to U.S. public-health, hospital and infection-control systems that are intended to help contain transmission if a case is identified. The agency also says there is no approved vaccine or medication specifically for Bundibugyo virus disease.

What happens to travelers from affected countries

CDC guidance covers travelers arriving from the Democratic Republic of the Congo, Uganda and South Sudan. Federal staff may conduct an initial assessment at designated U.S. airports, while state, tribal, local and territorial health departments may contact travelers after arrival to review travel history, provide health education and determine whether additional monitoring is needed.

People who were in an area of concern are advised to self-monitor, including taking their temperature daily, and notify public-health officials if symptoms develop within 21 days after leaving that area. People with possible occupational or other high-risk exposure may receive more frequent health-department monitoring.

The guidance does not call for automatic quarantine of every traveler. It lists different steps for high-risk exposures, possible exposure situations, travel in an affected country without known exposure and airport transit.

What the July 13 entry order does

A CDC order issued July 13, 2026, continued a time-limited suspension of entry for specified foreign nationals who had recently been present in the Democratic Republic of the Congo, Uganda or South Sudan. The order was set to remain in effect for 30 days. It is a defined restriction covering specified categories of people, not a permanent or blanket travel ban applying to every traveler.

What U.S. hospitals are expected to do

If a recently arrived traveler develops compatible symptoms, CDC guidance calls for advance coordination rather than an unannounced visit to a clinic or emergency department. Health officials are expected to assess the person’s exposure history, consult with the CDC when needed, and coordinate with emergency medical services and an appropriate healthcare facility before transport or evaluation.

For most people in the United States, the current risk remains low. The developments to watch are any confirmed U.S. case, evidence of spread into major international travel hubs, changes in the outbreak’s severity or transmissibility, and further updates to the July 13 entry order.

Sources

• CDC Ebola Outbreak: Current Situation
• Associated Press Ebola Report

The key warning: in these investigations, cases were identified after travelers returned home, and in one outbreak the cluster was recognized only after a report from a member of the public. CDC says those timing and communication gaps can leave other potentially exposed travelers without early notice.

What CDC found

CDC reports that investigators followed up on confirmed Legionnaires’ disease cases tied to two different hotels on St. Croix Island. CDC describes the two hotel outbreaks as unrelated—but the report focuses on what went wrong operationally, not on blaming a single source. In one case, a patient was hospitalized in their U.S. state of residence after returning from travel.

CDC also highlights that the outbreak at one hotel was detected solely through a report from a member of the public. That matters because, unlike a proactive notification to public health, public-report-driven detection can arrive later—after additional exposures may have already happened.

Why the detection delay matters

When people develop pneumonia-like illness days after travel, the chain that connects “symptoms” to “exposure location” can break. CDC notes that many travel-associated cases may be missed among travelers who return home before symptoms develop, and that delays in case identification and underreporting can slow the overall public-health response.

What CDC says should change

CDC frames “what’s changed” as an operational shift: public health and facilities need faster coordination and reporting when travel-associated Legionnaires’ disease cases emerge. In particular, CDC emphasizes the importance of:

• Notifying guests so additional cases can be found during hotel outbreaks.
• Including the destination/hotel information when reporting travel-associated Legionnaires’ disease cases to CDC—supporting multijurisdiction coordination to identify sources sooner.

For hotels and other facilities, the MMWR also points to the need for effective water-management programs and appropriate disinfection/testing to prevent Legionella growth in building water systems.

Practical takeaways for travelers

If you stayed at a hotel in the U.S. Virgin Islands (or elsewhere) and develop cough, fever, or shortness of breath after travel, the MMWR’s message is straightforward: tell your health care provider about your recent travel and where you stayed, so clinicians can consider travel-associated exposure in context and pursue timely testing.

And when you’re booking, you can ask hotels about their Legionella water-management practices—because the CDC’s theme here is that prevention and rapid communication have to work together, before outbreaks are recognized.

Bottom line: CDC’s report shows how Legionnaires’ disease outbreaks can be “missed” when detection happens after guests return home and when information arrives late—reminding travelers and facilities that timing and reporting are part of public health, not just clinical care.

Sources

• CDC MMWR (July 2, 2026): “Legionellosis Outbreaks Associated with Two Hotels — U.S. Virgin Islands, October 2024–April 2025”

What changed in WHO’s latest numbers

WHO published this as epidemiological update #38 on June 30, 2026, with data as of 31 May 2026. The report frames the pattern as part of an ongoing cholera upsurge, not a one-off flare.

There’s also an important context note: WHO says these month-over-month comparisons can be affected by underreporting, reporting delays, and differences in surveillance and case definitions across countries. WHO cautions that those factors can limit direct comparability across settings.

Even with the rise versus the previous month, WHO reported that cases in May 2026 were 59% lower than the same period last year, and deaths were 61% lower—suggesting the current wave is “up” relative to recent gains, while still below last year’s levels for the same months.

Where the rise is showing up

For the May 2026 period, WHO said cases were reported from 16 countries, territories, and areas across four WHO regions, with the Eastern Mediterranean Region recording the highest case counts, followed by the African Region, then South-East Asia, and the Region of the Americas.

Eastern Mediterranean Region (May 2026): WHO reported the most cases from Afghanistan, alongside Yemen, Pakistan, and Sudan—and Sudan accounted for most cholera-related deaths in that region.

African Region (May 2026): WHO reported the highest numbers of cases from Nigeria and the Democratic Republic of the Congo, along with Angola and South Sudan. Cholera-related deaths were concentrated in the Democratic Republic of the Congo, Nigeria, and Angola.

Other regions (May 2026): WHO reported cases from Myanmar in South-East Asia and cases from Haiti in the Americas during this period, with no cholera-related deaths reported in those regions in May.

Across the longer window from Jan. 1 to May 31, 2026, WHO reported 114,829 cholera/AWD cases and 1,318 deaths across 23 countries, again concentrated in Africa and the Eastern Mediterranean.

Why the upswing is hard to contain

WHO’s cholera upsurge situation page links the repeated waves to conditions that make contamination and rapid spread more likely—especially where safe water and sanitation are limited. WHO notes that climate extremes and conflict can reduce access to clean water and worsen outbreak conditions.

WHO also highlights a practical constraint for response: global capacity is being stretched and there is a shortage of cholera tools, including vaccines. WHO describes the overall global risk as very high and says it is responding urgently to reduce deaths and contain outbreaks.

What this means for U.S. readers—especially travelers and aid workers

Cholera spreads through contaminated food and water, and CDC says cholera activity varies by location even within a country. CDC’s traveler guidance focuses on avoiding unsafe food and water and washing hands frequently in outbreak settings.

CDC also explains that cholera vaccination is not routinely recommended for most travelers because cholera is rare for travelers and most people do not visit areas with active transmission. When vaccine is available, CDC says to consider vaccination based on the destination’s transmission level and the traveler’s exposure risk (for example, longer stays, outbreak-setting work, or limited ability to adhere to food and water precautions). CDC’s guidance references CVD 103-HgR (Vaxchora) for eligible travelers going to areas of active toxigenic Vibrio cholerae O1 transmission.

What to watch next

WHO indicates that starting in July, the cholera epidemiological update will be included on a monthly basis in the Weekly Epidemiological Record (WER), which should make it easier to track whether the renewed rise continues or eases.

Sources

• WHO (30 June 2026): Multi-country outbreak of cholera — Epidemiological update #38
• CDC Travelers’ Health: Cholera information for health care professionals (travel guidance)