Qadri, A., Arifzai, A., Danish, R.U. and Bangash, S.G. 2022. Descriptive Study of Pertussis in the Post Graduated Hospital Khost Afghanistan. Journal for Research in Applied Sciences and Biotechnology. 1, 5 (Dec. 2022), 75–78. DOI:https://doi.org/10.55544/jrasb.1.5.8.