EMERGING VIRAL PATHOGENS AND THEIR IMPLICATIONS FOR PUBLIC HEALTH
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Keywords
Emerging viral pathogens, SARS-CoV-2, Dengue, Influenza, Chikungunya, Pakistan, Public health surveillance, Hospital-based study.
Abstract
Emerging viral pathogens pose a persistent threat to global public health due to their unpredictable nature, rapid transmissibility, and potential for high morbidity and mortality. The COVID-19 pandemic and recurring outbreaks of dengue, influenza, and chikungunya have underscored the urgent need for integrated surveillance, rapid diagnostics, and effective control strategies. In Pakistan, dense populations, variable healthcare capacity, and environmental factors contribute to increased vulnerability to viral outbreaks, highlighting the need for hospital-based studies to guide targeted interventions.
Objective: To evaluate the epidemiological patterns, clinical outcomes, and public health implications of emerging viral pathogens in a tertiary care hospital setting in Pakistan.
Material and Method: A descriptive cross-sectional study was conducted at Nishtar Institute of Dentistry Multan, Pakistan, from September, 2024 to February, 2025. A total of 250 patients with suspected viral infections were recruited through purposive sampling. Nasopharyngeal swabs, blood samples, and other relevant specimens were collected and analyzed using RT-PCR and serological assays. Data on demographics, clinical presentation, pathogen type, outcomes, and hospital course were recorded and analyzed using SPSS version 26. Ethical approval was obtained from the institutional review board.
Results: Of the 250 patients, 58.4% were male, with a mean age of 38.6 years. The most prevalent pathogen was SARS-CoV-2 (38.0%), followed by dengue virus (26.8%), influenza A (15.2%), chikungunya (8.8%), and other respiratory viruses (11.2%). Hospitalization was required for 72.4% of patients, and 14.8% required intensive care. The overall mortality rate was 4.8%, with the highest case fatality among SARS-CoV-2 infections (7.4%). Delayed presentation (>3 days from symptom onset) was significantly associated with higher ICU admission rates (p<0.05).
Conclusion: Emerging viral pathogens remain a significant public health challenge in Pakistan, with SARS-CoV-2 and dengue virus as leading causes of hospital admissions. Timely diagnosis, improved surveillance, and public health education are essential for reducing disease severity and mortality. Strengthening laboratory capacity and integrating early warning systems can improve outbreak preparedness and response.
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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
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Dr Anila Anbreen
Demonstrator/ Dental Surgeon, Nishtar Institute of Dentistry Multan, Pakistan
Dr Muhammad Mutahir Mehdi
Assistant Professor & HOD of Oral Biology, Nishtar Institute of Dentistry Multan, Pakistan