Infectious diseases threats at the Arba'een – a neglected but one of the largest annually recurring mass gathering religious events. (October 2022) - Shafi, Shuja; Azhar, Esam; Al-Abri, Seif; Sharma, Avinash; Merali, Nizar; Al-Tawfiq, Jaffar A; El-Kafrawy, Sherif A; Zumla, Alimuddin; Lee, Shui Shan