Herpes zoster burden in patients with asthma: real-world incidence, healthcare resource utilisation and cost oleh Philippe Thompson-Leduc, Siyu Ma, Aruna Muthukumar, David Singer, Deepshekhar Gupta, Wendy Y Cheng, Francesca Devine, Manasvi Sundar, Michael Bogart, Ella Hagopian, Sara Poston, Mei Sheng Duh, John J Oppenheimer