Fig. 1

PRISMA flow diagram of study selection and literature search. A total of 21 studies involving 3067 clinical strains were identified for inclusion in the review. A total of 133 citations were identified from PubMed and Google Scholar databases. Of these, 30 studies were selected which used genotyping analysis by Spoligotyping after reviewing the title and abstracts. Additional screening was conducted in the full text and journal quality was considered and additionally, 9 studies were excluded because of repeated publication and data were not available