Which one of the following diseases is caused by bacteria?

Tuberculosis (TB) is an infectious disease caused by the bacterium Mycobacterium tuberculosis [t1][t4]. It primarily affects the lungs but can spread to other organs [c3][t4]. In contrast, the other options are viral in nature. Chickenpox is caused by the Varicella-Zoster virus (VZV) [t2][t3]. Poliomyelitis, commonly known as polio, is a highly contagious disease caused by the poliovirus [t1][t2]. Influenza (the flu) is an acute respiratory infection caused by various influenza viruses [c1][t1]. While bacterial infections like tuberculosis can be treated with antibiotics, these medications are ineffective against viral diseases such as chickenpox, polio, and influenza [c5][t7]. Understanding the causative agent is crucial for determining the appropriate medical treatment, as vaccines are available for all four diseases to prevent infection [c1][t7].

Sources

1. [1] https://www.cda.gov.sg/public/diseases/
2. [2] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 3: Health: The Ultimate Treasure > Activity 3.4: Let us find out > p. 34
3. [3] https://www.govinfo.gov/content/pkg/GOVPUB-HE20_3000-PURL-gpo14249/pdf/GOVPUB-HE20_3000-PURL-gpo14249.pdf
4. [4] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 3: Health: The Ultimate Treasure > Activity 3.4: Let us find out > p. 33
5. [5] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 3: Health: The Ultimate Treasure > 3.5.1 Treatment of diseases > p. 39