In the 2017 dengue outbreak in Peshawar, Pakistan, hundreds of incidents of dengue fever were reported in Peshawar in mid-2017. Initially, according to the health department of Khyber Pakhtunkhwa, 4,320 suspected cases were received by Khyber Teaching Hospital Peshawar and 831 were positive. About a dozen people died of dengue, starting in July. Punjab healthcare experts worked with local experts to control the dengue epidemic in Peshawar, with health workers going door-to-door to educate residents, as well as fumigation of the city to suppress mosquito populations.
Background
Peshawar Peshawar is the sixth largest city in Pakistan with a total area of 1,257 square kilometres, it is the capital of the Khyber Pakhtunkhwa province in Northern Pakistan. It is located on the flat Gandhara Plains, surrounded by mountain ranges on three sides. The climate is generally warm with an average temperature of 22.3 degrees Celsius and rainfall throughout the year.
The estimated population of Peshawar is 2.5 million, growing exponentially from 500,000 in 1980. The average household size in 2017 was 7.97 with a known housing shortage. Pashtuns are the main ethnic group, though Peshawar has seen a large influx of Afghan refugees resulting in unplanned and haphazard growth which governmental initiatives did not account for, resulting in ad-hoc planning and development and massive urban-sprawl which infrastructure, institutions and civic services struggle to support, particularly in the slums and settlement areas where poverty is high. Water supply and drainage systems in these areas are poor, resulting in increased water stagnation, especially in flooding seasons.Urban Policy And Planning Unit. (2024). Peshawar City Master Plan, 2024–2044 – Volume One. Available at: https://urbanpolicyunit.gkp.pk/wp-content/uploads/2025/05/1.-Peshawar-City-Final-Master-Plan-2024-2044.pdf
Dengue Dengue is a non-contagious single-stranded positive-sense RNA viral infection, found in over 125 countries annually, spread by mosquitoes carrying the epidemic vectors Aedes albopictus and Aedes aegypti. It belongs to the family Flaviviridae, the genus Flavivirus and has five strains. These mosquitoes are most often found in urban indoor environments during daytime.
The World Health Organisation (WHO) considers dengue part of the top ten global health issues, with over 100 million cases resulting in 20,000–25,000 deaths annually, making it the leading cause of arthropod-born viral disease worldwide. It has an incubation phase of four to seven days, with symptoms lasting three to ten days. There is no cure and treatment involves managing symptoms.
Total dengue cases are often underestimated as over 50% of those infected are either; asymptomatic, have mild flu-like symptoms which they self-manage or are misdiagnosed.Khan, N, U., Danish, L., Khan, H. U., Shah, M., Ismail, M., Ali, I., Petruzziello, A., Sabatino, R., Guzzo, A., Botti, G. & Iqbal, A. (2020). Prevalence of dengue virus serotypes in the 2017 outbreak in Peshawar, KP, Pakistan. Journal Of Clinical Laboratory Analysis, 34(9), e23371. Up to 5% of cases develop severe symptoms resulting in shock, organ failure, haemorrhage and potentially death. The severity of symptoms is influenced by various host, environmental and virus factors.
A positive association exists between rainfall, temperature and humidity, and dengue fever prevalence. With prevalence highest in tropical and subtropical environments across the Americas, Asia and Africa. Pakistan has had ten major outbreaks since 1982.
Details of the disaster Throughout 2017 the Ministry of National Health Services, Regulations and Coordination in Pakistan reported higher than usual numbers of dengue fever cases. The highest number of confirmed laboratory cases was 24,807 in the Khyber Pakhtunkhwa province resulting in 69 deaths by November 2017. Of these, 23,541 confirmed cases with 65 deaths occurred in Peshawar, with most cases occurring in September (32%) and October (41%) during monsoon season.
Between July to August 2017, 52% of those infected were aged 25-64 years old, 29% were 15-24, 15% were 0-14 years old and 3% were over 65. 62% of those infected were male.
Timeline Pakistan has experienced nearly annual dengue epidemics with previous notable outbreaks in Lahore and Swat. Dengue was already endemic across much of Pakistan by July 2017. +MonthEventJulyA dengue situation was declared in Khyber Pakhtunkhwa province with over 500 positive cases.AugustPakistan Red Crescent Society (PRCS) began initial screening camps and awareness drives in high-risk areas using provincial resources.SeptemberNational authorities confirmed the outbreak as an emergency dengue disaster with 75,000 suspected cases, 24,382 confirmed, 73 deaths mainly in Peshawar.OctoberOctober had the highest number of cases which coincided with the end of the monsoon rains. Vector surveillance with WHO identified "hot-spots" and started intensive community interventions.October–NovemberSix new screening/diagnostic camps established (esp. Peshawar City, Nowshera, Mansehra). Mass school and community awareness campaigns conducted.NovemberRapid decline in dengue cases.
Spatial distribution of the Dengue outbreak The dengue outbreak affected 15 districts in Khyber Pakhtunkhwa province with Peshawar at the epicentre, diffused throughout the region by the Aedes aegypti mosquito. Urbanisation and improved travel infrastructure allowed the migration of infected vectors and people between different districts. The virus spread along key transport corridors to Mardan, Nowshera, Mansehra, Kohat, and Buner/Swabi. There were smaller outbreaks in Abbotabad and Mardan due to high urban concentration of risk. Rural areas had lower number of incidences but this could be due to potential under-reporting. The outbreak unfolded over six months, peaking in August to early September 2017, in alignment with the regional monsoon season that promotes Aedes aegypti breeding. The dense housing, standing water and poor drainage in these urban areas created stagnant water for ideal breeding sites for the mosquitos. The seasonality of the monsoon, alongside the temperate climate and rain-fed agriculture explained the surge of cases in October. Environmental mis-management and poor sanitation underpinned the spatial pattern.
Clinical impacts There was a heavy hospital burden in Peshawar with five main hospitals reporting the documented cases. Patients from these hospitals were moved between endemic and non-endemic areas which amplified the initial outbreak. There was a loss of work days in young adults (16-30 years) who were the most affected group leading to local economic impacts. There were reports of fever, body aches, vomiting, skin rashes, gum bleeding, nosebleeds and elevated liver enzymes. Fevers were universal but headache, fatigue and liver enlargement were highly prevalent. IgM antibodies were detected in 180 cases that confirmed both primary and secondary infections. Most cases were identified as dengue fever and few progressed to dengue hemorrhagic fever and there was no dengue shock syndrome reported. The case fatality rate was 0.28% which was lower than the previous epidemics in Lahore and Swat.
Health consequences of Dengue Fever
Short-term Health Consequences In Peshawar, 23,541 residents were laboratory-confirmed to have been infected with dengue fever. When underreporting and asymptomatic cases are taken into account, the actual number of infections is estimated to be considerably higher, indicating that tens of thousands of individuals suffered direct health impacts from the virus within a short period. The outbreak resulted in the deaths of 65 residents in Peshawar, representing an irreversible loss of life.
The most common short-term health impacts typically began with a mild to high fever, which was experienced by nearly all patients (100%).Severe headache, along with intense muscle and joint pain--characteristic symptoms of dengue fever—were also highly prevalent (95%), often causing significant discomfort and limiting patients' ability to carry out normal activities. Nausea and vomiting occurred in a considerable number of patients (70%), potentially leading to dehydration and electrolyte imbalance. A rash appeared in nearly one-third of cases (30%). In the most severe instances (5%), patients exhibited bleeding tendencies and faced life-threatening complications such as shock and organ failure.
The average age of dengue patients was approximately 26 years, with the majority of cases concentrated among individuals aged 16 to 30. This demographic represents a crucial segment of the social labor force, and their collective infection negatively impacted household livelihoods and posed challenges to social stability. Males faced a higher risk of infection (65.3%) and demonstrated a significantly greater likelihood of developing severe cases compared to females (accounting for 88.6% of fatal outcomes). This resulted in numerous families losing husbands, fathers, or sons, dealing a severe blow to family structures.
Long-term health consequences
While most people begin to feel better within a couple of weeks after dengue infection, this outbreak has shown that recovery is not always straightforward.Dr. Kamalesh , A. (2025) Recovering from dengue? here's your ultimate healing guide!, Yashoda Hospitals. Available at: https://www.yashodahospitals.com/blog/post-dengue-symptoms-recovery-complications/ (Accessed: 23 November 2025) Many patients, even those who had mild cases, reported that their health did not fully return to normal immediately after the fever and pain subsided. Health centres involved in the response highlighted several long-term consequences that became increasingly common as the outbreak progressedDr Mrudula , K. (2024) Long-term effects of dengue & how to manage them, Medicover Hospitals India. Available at: https://www.medicoverhospitals.in/articles/after-effects-of-dengue (Accessed: 23 November 2025).
One of the most widely reported issues is prolonged fatigue. Patients often described feeling "drained" or unusually weak for weeks after their initial recovery.Dr. Kamalesh , A. (2025) Recovering from dengue? here's your ultimate healing guide!, Yashoda Hospitals. Available at: https://www.yashodahospitals.com/blog/post-dengue-symptoms-recovery-complications/ (Accessed: 23 November 2025) Persistent joint and muscle discomfort was another recurring problem. Clinicians noted that although the acute pain of dengue usually lessens within a few days, many people continued to experience stiffness or soreness long after their fever resolved.Pajor, M.J., Long, B. and Liang, S.Y. (2024) Dengue: A focused review for the emergency clinician, The American journal of emergency medicine. Available at: https://pmc.ncbi.nlm.nih.gov/articles/PMC11254539/ (Accessed: 23 November 2025) For some, this lingering pain affected mobility and reduced their ability to perform tasks that required physical strength or endurance.