CBSE Class 8 Answered

Tuberculosis (Mycobacterium tuberculosis)

• Through air, dust or the sputum of an infected person

Cholera (Vibrio cholerae)

• Contaminated water, food and drinks, spread by flies

Tetanus (Clostridium tetani)

• Through cuts or wounds in the skin
• enters through the blood into the spinal cord

Syphilis (Treponema pallidum)

• Sexually transmitted
• close contact

Diphtheria (Corynebacterium diphtheriae)

• Droplet infection while coughing and sneezing, contact

Typhoid (Salmonella typhi)

• Contaminated water, milk, through flies

Whooping Cough (Haemophilus pertussis)

• Contact, droplet
• infection of throat

Pneumonia (Diplococcus pneumoniae)

• Contact or by air

Leprosy (Mycobacterium leprae)

• Contact, highly contagious

Gonorrhoea (Neisseria gonorrhoea)

• Sexual contact

Malaria (Plasmodium falciparum)

• Female Anopheles mosquito acts as a carrier

Amoebic dysentery or Amoebiasis (Entamoeba histolytica)

• Through food and water contaminated by flies, through faeces of an infected person

Ascariasis (Ascaris lumbricoides)

• Through soil, food and water contaminated with eggs of female worm
• Flies act as carriers

Taeniasis (Taenia solium) 

Consumption of  infected pork and beef