CAT and malaria: Out of these 154 assessed reports, 141 were excluded for the following reasons: 79 reports were on in vivo studies, 30 reports were on in vitro studies, 22 reports were reviews, 2 reports did not mention any malaria cases, 2 reports were duplicates, 2 reports were conference abstracts, 2 reports had no information on catalase level, 1 report involved catalase after treatment, and 1 report examined CAT in malaria without a control group.