The vast Rohingya refugee camps in Cox's Bazar, Bangladesh, along with their surrounding host communities, are grappling with a deepening health crisis. As of July 2026, humanitarian efforts, led by the World Health Organization (WHO) and its health sector partners, are straining to maintain vital medical services while simultaneously battling monsoon-related emergencies and ongoing disease outbreaks. A critical shortage of funds looms large, threatening to dismantle public health surveillance, impede swift outbreak responses, and disrupt the delivery of essential healthcare for hundreds of thousands of vulnerable individuals. ## Navigating Monsoon Challenges and Disease Threats Cox's Bazar, situated in a monsoon-prone region, faces recurring challenges annually. The heavy rains and subsequent flooding create ideal breeding grounds for disease-carrying mosquitoes, leading to spikes in illnesses like dengue fever. Simultaneously, the crowded conditions within the refugee camps are fertile ground for the rapid transmission of highly infectious diseases, most notably measles, which has seen an ongoing outbreak. These environmental factors, combined with population density, place an immense burden on an already stretched healthcare system. Measles, a highly contagious viral infection, poses a severe risk in any crowded setting, but particularly within refugee camps where a large population lives in close proximity. It spreads through respiratory droplets and can lead to serious complications such as pneumonia, encephalitis (brain inflammation), and severe diarrhea, especially among malnourished children. The ongoing outbreak underscores the critical need for robust vaccination programs and vigilant disease surveillance to prevent widespread illness and potential fatalities. Efforts to respond to this outbreak require sustained resources for case identification, isolation, and further vaccination campaigns. Dengue fever, a mosquito-borne illness, presents another significant public health concern. Symptoms can range from mild fever to severe dengue, which can be life-threatening. The monsoon season exacerbates the risk as stagnant water collects, providing perfect breeding sites for the Aedes aegypti mosquito, the primary vector for the virus. Controlling mosquito populations through community engagement and environmental management, coupled with early diagnosis and supportive care for patients, are fundamental to managing and preventing dengue outbreaks. ## Bolstering Protection: Vaccination Efforts In this challenging environment, vaccination campaigns remain a cornerstone of preventive health. In July 2026, a preventive bivalent Oral Polio Vaccine (bOPV) campaign was a key priority. Polio, a crippling and potentially fatal infectious disease, primarily affects young children and can lead to permanent paralysis. While global efforts have significantly reduced polio cases, outbreaks can still occur, especially in populations with low immunity. The bOPV campaign is crucial for boosting immunity and preventing the re-establishment of the virus in a vulnerable population. The success of such campaigns relies heavily on widespread community participation and robust logistical support. Beyond specific campaigns, maintaining high coverage of routine immunization for diseases like diphtheria, tetanus, pertussis, and tuberculosis is paramount. These routine vaccinations form the basic protective shield for children and adults against a host of preventable diseases. Disruptions to routine immunization schedules can create immunity gaps, leaving populations susceptible to future outbreaks and reversing hard-won public health gains. Ensuring consistent access to these essential vaccines is a continuous challenge in humanitarian settings, demanding dedicated resources and outreach. ## The Critical Role of Health Sector Coordination As the lead agency for the Health Sector response, WHO plays an indispensable role in coordinating the extensive network of health partners working across the Rohingya refugee camps and host communities. This coordination is vital for ensuring that services are delivered efficiently, without duplication, and based on the most pressing needs identified. WHO supports strategic planning, facilitates partner alignment, and promotes evidence-based decision-making. Through regular coordination meetings – ranging from Cox's Bazar-level gatherings to 33 camp-level meetings and a Strategic Advisory Group (SAG) session – partners address priority public health issues, discuss funding impacts, review disease surveillance data, plan immunization activities, strengthen community health initiatives, and enhance emergency preparedness and response capabilities, including mental health support. To ensure transparency and informed action, the Health Sector also produces various information products. These include 4W (Who, What, Where, When), HeRAMS (Health Resources and Services Availability Monitoring System), EWARS (Early Warning Alert and Response System), epidemiological updates, and training calendars. These tools provide critical data on health service availability, disease trends, and operational activities, enabling partners to make data-driven decisions and optimize their response efforts. This robust information infrastructure is the backbone of an effective humanitarian health operation. ## Looming Crisis: The Impact of Funding Gaps The most alarming aspect of the July 2026 situation report is the severe and persistent funding gaps identified through the analysis of the 2026 Joint Response Plan (JRP). These shortfalls pose an existential threat to the continuity and effectiveness of the health response. From August 2026, the report warns that funding shortfalls are expected to significantly cripple infectious disease surveillance, outbreak detection, and response activities (classified as P1 priorities). This means a drastic reduction in the capacity for early warning systems, health-risk monitoring, and critical data analysis. Without these functions, the ability to detect new outbreaks quickly, understand their spread, and make evidence-based decisions for effective intervention will be severely compromised. Given the ongoing measles outbreak and the constant threat of other infectious diseases in the camps, this decline in surveillance could have catastrophic consequences, allowing diseases to spread unchecked before a response can be mounted. Further compounding the issue, from September 2026, funding shortfalls are expected to significantly constrain WHO's ability to coordinate partners and lead the Health Sector response. A breakdown in coordination inevitably leads to fragmentation of services, inefficient resource allocation, and a diminished collective ability to address health emergencies. Without strong leadership, the response risks becoming disjointed and less effective, impacting the overall humanitarian effort. By October 2026, the situation is projected to deteriorate even further, potentially disrupting services in 13 Primary Healthcare Centers (PHCs), one Field Hospital, and four Health Posts. This would directly affect access to essential health services for an estimated 400,000 people. These facilities are the first line of defense for a vast population, providing routine medical consultations, emergency care, maternal and child health services, and treatment for common illnesses. The disruption of these services would mean longer travel times to alternative facilities (if available), increased suffering from preventable and treatable conditions, and potentially higher mortality rates. Moreover, critical support services would also be significantly affected. Referral services, which ensure that patients with more severe conditions can access specialized care, would be strained or broken. Rehabilitation and physiotherapy services, particularly vital for persons with disabilities who constitute a significant vulnerable group within the refugee population, would also face severe cutbacks. Community health services, which engage local volunteers and health workers to promote health, provide basic care, and educate the population, are also expected to be heavily impacted. These services are crucial for reaching individuals who might not otherwise access formal healthcare, and their disruption would severely undermine community-level health promotion and disease prevention efforts. ## The Human Element: Why Sustained Support Matters The impending funding crisis in Cox's Bazar is not merely an administrative or logistical challenge; it represents a profound threat to the lives and well-being of a highly vulnerable population. The Rohingya refugees have already endured immense trauma and displacement, and their continued health and safety depend on consistent, robust humanitarian support. The gains made in establishing a foundational health system in the camps, however fragile, are now at risk of being undone. Preventing this humanitarian setback requires immediate and sustained international attention and funding. The ethical imperative to protect the health of these refugees, alongside the broader public health implications of uncontrolled outbreaks, demands that the international community acts decisively to bridge these critical funding gaps. ## The Path Forward: Urgent Action Needed The situation in Cox's Bazar highlights the precarious balance of humanitarian aid and the profound impact of funding fluctuations. While WHO and its partners continue their dedicated efforts to deliver essential services and respond to immediate emergencies, the shadow of funding shortfalls looms large. Urgent action is needed to secure the necessary financial resources to prevent a further deterioration of the health situation, ensuring that disease surveillance, outbreak response, and critical healthcare services remain operational for hundreds of thousands of people in dire need. Without this sustained support, the health and dignity of the Rohingya people remain deeply at risk.