Karanbir Singh, Anup Kumar Kesavan and Seema Madhumal Thayil 2021. An Overview of Epidemiology and Diagnostic Techniques for Emerging and Re-emerging Viral Infections. Asian Pacific Journal of Health Sciences. 8, 3 (Jul. 2021), 48–60. DOI:https://doi.org/10.21276/apjhs.2021.8.3.11.