|Mycobacteriology is a sub-category of bacteriology which deals with all the species of mycobacterium such as mycobacterium avium, mycobacterium tuberculosis, mycobacterium paratuberculosis, etc. of all mycobacterium tuberculosis is the main causative organism of tuberculosis which affects human lung and leprosy which affects human skin. In animals, it causes mad-cow disease in animals. Measures have been taken by WHO to eradicate leprosy worldwide. Tuberculosis is associated with HIV, as patients suffering from HIV are highly prone to tuberculosis. The top open access journals are peer reviewed scholarly journals of Microbiology. The top open access journals are freely available on the public internet domain, allowing any end users to read, download, copy, distribute, prink, search or link to the full texts of the articles. These provide high quality, meticulously reviewed and rapid publication, to cater the insistent need of scientific community. These journals are indexed with all their citations noted. The top open access journals are indexed in MEDLINE, PUBMED, SCOPUS, COPERNICUS, CAS, EBSCO and ISI.