Tragic Mpox Outbreak in Sindh: Local Transmission Confirmed Following Infant Deaths

KARACHI, Pakistan — Health authorities in Pakistan have confirmed the country’s first local outbreak of mpox (formerly monkeypox) following a cluster of infections in the Sindh province. As of April 4, 2026, officials reported that seven infants have died in the Khairpur district, with laboratory results confirming that four of the deceased newborns were positive for the virus.

The emergence of these cases marks a critical shift in the region’s epidemiological landscape. While Pakistan has recorded sporadic mpox cases since 2024, all previous instances were linked to international travel, primarily from the Gulf region. This latest development indicates that the virus is now circulating within local communities and healthcare settings, posing a significant challenge to public health infrastructure.

The Outbreak in Khairpur: Key Findings

The cases surfaced in Khairpur town, where the infants presented with hallmark symptoms of the virus, including painful skin lesions, high fever, and flu-like exhaustion. According to Dr. Ahmed Sheikh, a spokesperson for the Sindh Health Department, blood samples from the seven infants were analyzed in Karachi, confirming mpox in four instances.

The victims were all neonates—newborns in their first month of life—who were already grappling with significant health hurdles. Officials noted that the infants were premature, had low birth weights, and suffered from malnutrition-related complications. While the presence of mpox in these vulnerable patients is alarming, Dr. Sheikh clarified that the virus was a complicating factor rather than the sole cause of death.

“The deaths were recorded in Khairpur Medical College Hospital and a private facility,” Dr. Sheikh stated. “While mpox contributed to the systemic stress on these infants, their underlying clinical conditions, including prematurity and malnutrition, played a primary role in the tragic outcomes.”

Immediate Public Health Response

In response to the cluster, the Sindh Health Department has taken several aggressive measures to contain the spread:

• Facility Closures: Neonatal Intensive Care Units (NICUs) at the affected hospitals have been temporarily shuttered for deep cleaning and sterilization.

• Contact Tracing: An expert medical team has been deployed to identify the “index case” (the first person infected) and track all individuals who had contact with the infants or the wards.

• Enforced Quarantines: Isolation centers have been established at Khairpur Medical College Hospital to manage suspected cases.

• Clinical Surveillance: The Pakistan Medical Association (PMA) has signaled a wider concern, reporting at least 15 other children with similar skin lesions currently admitted in hospitals across Sukkur, Mirpurkhas, and Hyderabad.

Expert Perspectives: Why Neonates are at Risk

The vulnerability of newborns to mpox is a significant concern for pediatricians globally. Unlike healthy adults, who often experience a self-limiting illness, infants possess immature immune systems that cannot easily fight off viral zoonoses.

Dr. Nigel Crawford, a pediatric infectious disease expert at the Murdoch Children’s Research Institute, explains that the physical characteristics of neonatal skin and systemic immunity make them particularly prone to severe outcomes. “Neonates have a higher surface-area-to-body-mass ratio and an immune system that is still ‘learning,'” Dr. Crawford notes. “Rashes that might be manageable in an older child can lead to secondary bacterial infections, sepsis, or even encephalitis in a newborn.”

Dr. Maria Van Kerkhove, the World Health Organization’s (WHO) technical lead for mpox, has previously highlighted that while the overall case fatality rate remains relatively low (1–10% depending on the strain), the risk profile shifts dramatically for children under eight and the immunocompromised.

Local Transmission vs. Imported Cases

The distinction between “imported” and “local” transmission is vital for health policy. In 2024 and early 2026, cases in Peshawar and Karachi were traced back to travelers arriving from abroad. However, the Khairpur cluster suggests the virus has moved into the “zoonotic” or community-spread phase within Pakistan.

Investigation into the Khairpur facilities revealed lapses in infection control. Sukkur Division Commissioner Abid Saleem Qureshi flagged weak protocols in maternity wards as a likely catalyst for the spread. One private clinic has already been sealed for safety violations. In high-contact environments like NICUs, the virus can spread through:

1. Skin-to-skin contact with infected caregivers or parents.

2. Respiratory droplets during prolonged face-to-face interaction.

3. Fomites, such as contaminated bedding, towels, or medical equipment that has not been properly disinfected.

The Intersection of Malnutrition and Viral Severity

The outbreak is compounded by a pre-existing nutritional crisis in the Sindh province. According to UNICEF data, approximately 40% of children in Pakistan suffer from stunting and malnutrition.

Malnutrition acts as an “immune-suppressant,” making it difficult for the body to mount a robust antibody response. For the infants in Khairpur, the combination of a high-stress virus like mpox and a lack of nutritional reserves created a “perfect storm,” leading to the rapid deterioration of their health.

Public Health Implications and Recommendations

For the general public, this outbreak is a call for heightened vigilance rather than panic. Health authorities recommend several practical steps for families:

• Symptom Monitoring: Look for unexplained rashes, especially those that progress from flat spots to fluid-filled blisters, accompanied by fever and swollen lymph nodes.

• Hygiene Protocols: Frequent handwashing and the use of alcohol-based sanitizers are effective against the virus’s lipid envelope.

• Careful Facility Selection: Expectant parents are encouraged to ensure that the birthing centers they choose adhere to strict infection control and sterilization protocols.

Currently, there is no widespread vaccination campaign in Pakistan for mpox. However, the JYNNEOS vaccine is used internationally for high-risk contacts. Local authorities are currently focusing on “ring vaccination” and isolation to prevent the cluster from expanding into a general epidemic.

Limitations and Balanced View

It is essential to note that the investigation is in its preliminary stages. While four infants tested positive, the definitive source of the virus—whether animal-to-human or a specific human “superspreader”—is still being confirmed through genomic sequencing.

Furthermore, because symptoms of mpox can closely mimic other common pediatric illnesses such as chickenpox (varicella) or hand, foot, and mouth disease, there is a risk of both over-reporting and under-reporting in rural areas where PCR testing is limited.

The Sindh Health Department maintains that while the situation is serious, the closure of NICUs and the implementation of isolation protocols are “precautionary and proactive” steps designed to break the chain of transmission before it reaches the wider community.

References

• https://health.economictimes.indiatimes.com/news/industry/mpox-outbreak-4-infected-infants-dead-in-paks-sindh/130048766?utm_source=latest_news&utm_medium=homepage

Medical Disclaimer: This article is for informational purposes only and should not be considered medical advice. Always consult with qualified healthcare professionals before making any health-related decisions or changes to your treatment plan. The information presented here is based on current research and expert opinions, which may evolve as new evidence emerges.