Box 2 Search strategy

#1 vaccination

((Anti-bacteri* or antibacteri* or bacteri*) OR (anti-viral or antiviral or viral or anti-virus* or antivirus* or virus*)) AND (vacc* or immun*)

#2 diseases

Pneumo* OR influenza* or flu or flus or H1N1 or H5N1 or H3N2 or Yamagata or Victoria OR coronavirus or corona or COVID-19 or SARS-CoV-2 or COVID

#3 antimicrobials

(Antibiotic* or anti-biotic* or abx or antibacterial* or anti-bacterial* or antiinfective* or anti-infective* or antimicrobial* or anti-microbial* or antimycobacterial* or anti-mycobacterial*) AND ((drug or drugs) AND (prescrib* or prescription* or usage? or “use” or uses or utilis* or utiliz*))