Shah, J., Samson, P., Pradhan, N. M., Shrestha, A., Maharjan, S., Dangol Shrestha, S., & KC, S. (2021). Breakthrough infection after Covishield COVID-19 vaccine among health care workers at Patan Academy of Health Sciences, Nepal. Journal of Patan Academy of Health Sciences, 8(2), 10–17. https://doi.org/10.3126/jpahs.v8i2.28833