निम्नलिखित में से कौन सा रोग अस्थि मज्जा (bone marrow) में शुरू होता है और सफेद रक्त कोशिकाओं में असामान्य वृद्धि की विशेषता रखता है?

Which of the following groups consists exclusively of diseases caused by bacterial infections?

Which of the following groups of biological agents are the primary carriers in contaminated water that cause waterborne diseases such as cholera, typhoid fever, and dysentery?

Identify the bacterial disease from the following options: