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प्रश्न
Why do you think it is not possible to produce vaccine against 'common cold'?
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उत्तर
Vaccines target specific pathogens and elicit immunity. In case of common cold, more than 200 strains of viruses are responsible for causing the disease. Hence it is practically difficult to develop vaccine against it.
संबंधित प्रश्न
Describe the asexual and sexual phases of life cycle of Plasmodium that causes malaria in humans
Name the causative organism of the disease amoebiasis. List three symptoms of the disease.
How does the transmission of the following disease take place?
Amoebiasis
Name a human disease, its causal organism, symptoms (any three) and vector, spread by intake of water and food contaminated by human faecal matter.
The sporozoites of Plasmodium vivax are formed from ________.
Complete the following table:
| Diseases | Causative agent | Site of infection | Incubation period |
| Mumps | |||
| Chicken pox | |||
| Dengue fever |
List the causative agent, mode of transmission and symptoms for Diphtheria and Typhoid.
Write the symptoms of filariasis.
A person is suffering from a high-grade fever. Which symptoms will help to identify if he/she is suffering from Typhoid, Pneumonia or Malaria?
Ringworm in humans is caused by:
Some of the events occurring during the life cycle of Plasmodium are given below. Identify the CORRECT statement.
Typhoid is transmitted through ______
Which of the following is not the causal organism for ringworm?
A person with sickle cell anemia is ______.
Why is it that during changing weather, one is advised to avoid closed, crowded and airconditioned places like cinema halls etc.?
“Maintenance of personal and public hygiene is necessary for prevention and control of many infectious diseases”. Justify the statement giving suitable examples.
Ringworm is one of the most common infectious fungal disease in humans. Name any two genera of fungi which cause ringworm.
Write the mode of transmission for the following diseases:
Filariasis
How does the transmission of the following disease take place?
Malaria
