1. William C, Shiel JR. Medical Definition of Chickenpox. Calif: Medicine Net. Available from: https://www.medicinenet.com/chickenpox/definition.htm. Accessed: August 8, 2019.
2. The Namibian. Chickenpox can be deadly. Available from: https://www.namibian.com.na/157382/archive-read/Chickenpox-can-be-deadly. Accessed June 25, 2019.
3. CDC. Prevention of varicella: Recommendations of the advisory committee on immunization practices (ACIP). Centers for disease control and prevention website. Available from: https://www.cdc.gov/vaccines/hcp/acip-recs/vacc-specific/varicella.html. Accessed May 27, 2019
4. WHO. Varicella and herpes zoster vaccines. Available from: http://www.who.int/wer/2014/wer8925.pdf?ua=1. Accessed June 26, 2019
5. Turab AM, Chehadeh W. Varicella infection in the Middle East: Prevalence, complications, and vaccination. J Res Med Sci. 2018 Apr 26;23:19.