Summarize the topic of Bacteria and disease.

Bacteria and disease refers to the role bacteria play in causing infections and illnesses in humans and other organisms. Pathogenic bacteria can enter the body through various routes, and their presence often triggers immune responses. Diseases caused by bacteria can range from mild (e.g., sore throat) to severe (e.g., tuberculosis, cholera). Understanding bacterial pathogenicity, immune response, and antibiotic resistance is crucial for managing and treating bacterial infections.