Urgent Immunization Needed to Mitigate Escalating Measles Outbreak among Pakistani Children: A Call to Action

Measles is a highly contagious, potentially fatal viral disease that can be prevented by vaccines. Patients typically present with fever, maculopapular rashes, and cough, coryza, or conjunctivitis.[1] The virus spreads through the respiratory system and predominantly affects newborns and children under the age of 5.[2] Pakistan continues to have regular measles outbreaks despite advancements in research, mostly due to barriers associated with vaccination campaigns and spatial disparities. Susceptibility and connectivity dynamics drive outbreak risks, emphasizing the need for targeted interventions. Data quality issues underscore the necessity for enhanced surveillance and validation of novel data sources to inform effective control strategies.[3] Measles outbreaks, notably in Karachi, signify a pressing concern in Pakistan's public health landscape.[4] In January 2024 alone, Karachi reported a notable spike in measles cases, with 59 cases, including three children, and two fatalities attributed to the virus.[4] The high prevalence of complications including pneumonia and encephalitis in the afflicted individuals highlights the seriousness of the outbreak.[4] The surge in cases observed reflects a broader trend across Pakistan, as evidenced by 122 reported outbreaks in 21 districts in 2023 alone.[5] Despite concerted vaccination efforts, confirmed cases have risen sharply from 675 in 2020 to over 4000 in 2023.[5] These statistics may also be indicative of the impact of the COVID-19 pandemic, during which a decline in measles cases was initially observed due to preventive measures such as mask-wearing and social distancing. However, resources primarily directed toward pandemic containment efforts hindered measles surveillance, compounded by impediments to medical checkups during lockdown situations.[6] Conversely, following the COVID-19 period, there was a lasting effect of reduced focus on measles immunization due to the disruption of immunization prioritization for COVID-19, underperformance in immunization coverage, and strain on the public health-care system.[7] These statistics highlight a concerning 43% increase in measles-related deaths in Pakistan in 2022, as reported by the World Health Organization (WHO), underscoring the challenges faced in maintaining effective vaccination coverage programs nationwide.[8] Several factors contribute to Pakistan's vulnerability to measles outbreaks. Its dense population, limited access to health-care services, poor literacy rates, and inadequate health-care facilities, characterized by a doctor–patient ratio below WHO standards which is 1:1000, exacerbate infection control challenges.[9] A nationwide survey conducted by the Finance Division of the Pakistan Government, encompassing 1279 hospitals, revealed alarming shortages of doctors, with a staggering doctor–patient ratio of 1:1300 reported in the 2018–2019 Economic Survey.[9] Moreover, environmental factors such as increased wind velocity and temperature variations further burden health-care resources, aligning with Pakistan's climatic conditions.[10] Due to social attitudes and behavioral factors, vaccine hesitancy exacerbates these difficulties and makes it more difficult to achieve adequate vaccination coverage.[11,12] Besides measles vaccination, corruption poses a significant problem to Pakistan's health-care system. Transparency International highlighted corruption as a major issue in 2012, directly associating it with the measles outbreak in Sindh. Corruption undermines vaccination efforts, hindering the control of measles outbreaks and endangering public health.[13] The impact on children's health is severe, with 55% experiencing organ issues including respiratory tract infections, hepatitis, pancreatitis, and central nervous system involvement.[14] The critical requirement for vaccination is highlighted by the fact that pneumoniae, a main consequence, considerably raises the risk of mortality.[15] Barriers to vaccination, including inadequate rural health-care infrastructure and parental refusal influenced by religious beliefs, lack of awareness, and limited access to health-care facilities, contribute significantly to measles outbreaks, particularly in rural areas like Sindh.[16,17] Strategic interventions are imperative to combat measles outbreaks in Pakistan. At several administrative levels, immediate action is required to create a national action plan that will guarantee focused vaccination campaigns and thorough tracking of vaccine coverage. Collaboration between government health sectors and private hospitals is seen as pivotal in strengthening the national health system and eradicating vaccine-preventable diseases (VPD) such as measles, positioning Pakistan among VPD-free nations.[13] Vaccination programs must be bolstered and access to antibiotics for pneumonia prevention should be made essential for children under the age of 5 as most of them die from pneumonia or sepsis.[18] In 2021, Pakistan stood among the top 5 countries where children are not immunized with measles vaccine. Over 120 million children worldwide are unable to receive the measles vaccine in 2020, including 40 million in Pakistan due to which the country experiences a high burden of measles cases and deaths. Low routine immunization coverage, malnutrition, vitamin deficiencies, and inadequate health-care investment further contribute to measles outbreaks. The combination of these factors makes it extremely difficult to stop measles outbreaks in Pakistan, which calls for quick action to keep vaccination rates high and avoid a public health emergency.[19] Financial support and sponsorship Nil. Conflicts of interest There are no conflicts of interest.