Advertisements
Advertisements
प्रश्न
Why do you think it is not possible to produce vaccine against 'common cold'?
Advertisements
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
What are the various public health measures, which you would suggest as safeguard against infectious diseases?
How does the transmission of the following disease take place?
Amoebiasis
What complications will arise if the blood of an Rh-positive person is transfused to an Rh-negative person and vice versa?
Haemozoin is ____________.
Match the pathogens with respective diseases caused by them and select the correct match using the codes given below.
| Column I | Column II |
| I. Leishmania donavani | 1. Malaria |
| II. Wuchereria bancrofti | 2. Amoebiasis |
| III. Trypanosoma gambiense | 3. Kala - azar |
| IV. Entamoeba histolytica | 4. Sleeping sickness |
| 5. Filariasis |
List the causative agent, mode of transmission and symptoms for Diphtheria and Typhoid.
| Diseases | Causative agent | Symptoms |
| Ascariasis | Ascaris | |
| Trichophyton | Appearance of dry, scaly lesions on various parts of the body | |
| Typhoid | High fever, weakness, headache, stomach pain and constipation. | |
| Pneumonia |
What is Kala-azar?
Which of the following sets of diseases is caused by bacteria?
The active form of entamoeba histolytica feed upon:
The organisms which cause diseases in plants and animals are called ______.
Given below are the pairs of pathogens and the diseases caused by them. Which out of these is not a matching pair and why?
| (a) | Virus | common cold |
| (b) | Salmonella | typhoid |
| (c) | Microsporum | filariasis |
| (d) | Plasmodium | malaria |
“Maintenance of personal and public hygiene is necessary for prevention and control of many infectious diseases”. Justify the statement giving suitable examples.
The following table shows certain diseases, their causative organisms and symptoms. Fill the gaps.
| Name of the Disease | Causative organism | Symptoms | |
| (i) | Ascariasis | Ascaris | ______ |
| (ii) | ______ | Trichophyton | Appearance of dry, scaly lesions on various parts of the body |
| (iii) | Typhoid | ______ | High fever, weakness, headache, stomach pain, constipation. |
| (iv) | Pneumonia | Streptococcus pneumoniae | ______ |
| (v) | ______ | Rhino viruses | Nasal congestion and discharge, sorethroat, cough, headache |
| (vi) | Filariasis | ______ | Inflammation in lower limbs |
If there are two pathogenic viruses, one with DNA and other with RNA, which would mutate faster? And Why?
“Plasmodium protozoan needs both a mosquito and a human host for its continuity.” Explain.
Which particles are responsible for causing the greatest harm to human health?
Write the scientific name of the causative agent of the following disease:
Typhoid
How does the transmission of the following disease take place?
Malaria
Match List I with List II.
| List I | List II |
| A. Common Cold | I. Plasmodium |
| B. Haemozoin | II. Typhoid |
| C. Widal test | III. Rhinoviruses |
| D. Allergy | IV. Dust mites |
Choose the correct answer from the options given below:
