Skip to main content

Important Communicable Diseases Symptoms and Prevention – CBSE Class 9 Science

Communicable Diseases Symptoms and Prevention - CBSE Class 9 Science

Communicable Diseases Symptoms and Prevention – CBSE Class 9 Science

In this article, we will discuss the topic ‘Communicable Diseases Symptoms and Prevention‘, from the Chapter 5 – Why do we fall ill out for Class 9 Science.
Communicable diseases are those which get transferred from one person to another or one animal to a person or another animal by means of any contamination.
Communicable Diseases are :-
Malaria
  • Malaria is insect-borne disease and caused by a parasitic protozoan,
  • Plasmodium completes its life cycle in two hosts, man, and female Anopheles mosquito
  • It is transmitted from person to person by the bite of the insect vector, the female Anopheles 
  • When a mosquito bites an infected person, the protozoa are sucked into the stomach of insect along with the blood and breed there.
  • These parasites complete their life-cycle when they enter the red blood corpuscles in man and destroy them.

Symptoms
  • High fever, headache, body ache, nausea, and shivering are some of the symptoms of malaria.
  • Each malarial attack lasts for 6-10 hours and consists of the cold stage (shivering), hot stage (fever) and sweating stage (temperature goes down to normal).

Prevention
  • Efforts must be made to prevent mosquitoes from biting and also prevent them from Breeding
  • Following are some such methods:
  • Use wire mesh on doors and windows to prevent entry of mosquitoes into the house
  • Use mosquito repellents to prevent mosquito bites
  • Spray kerosene on stagnant water bodies or introduce fishes that feed on mosquito larva into the water bodies, so that the larvae are killed
  • Example of larvae eating fishes: Gambusia, Minnows, Trouts
  • Spray insecticides like Malathion, BHC
  • Clean tanks and sumps regularly
  • Do not allow rainwater to collect and stagnate in the garden

For free NCERT solutions for Class 9, click free solutions.
Register with us for live classes and study from the experts. For more queries click Science Class 9.

Comments

Post a Comment

Thank you we will contact ASAP.

Popular posts from this blog

Magnetic and non-magnetic material Class 6 Science

Magnetic and non-magnetic material  Class 6 Science A magnet is a substance that is drawn to certain magnetic materials like iron, cobalt, and nickel. Magnets have the ability to draw iron to them. Natural magnets are rocks that naturally draw iron. Non-magnetic materials include things like wood, rubber, coins, feathers, leather, etc. that are not drawn to iron. Magnet characteristics It pulls magnetic materials, such as iron. The magnet's two ends are referred to as its poles. The magnet's diametrically opposed poles are drawn together. Heating, hammering, or dropping causes it to lose its characteristics. On the basis of properties types of Magnets Temporary magnets are those magnets that are magnetic for only a little duration. Typically, iron, cobalt, or nickel are used to make them. When they are close to the powerful magnet, they act like a magnet. When they are yanked away from the powerful magnet, they stop being magnetic. Permanent magnets are magnets that have magne...
Post a Comment
Read more

What are Noble Gases? Example and noble gases name

What are Noble Gases? Example and noble gases name Noble Gases Noble gases, sometimes known as inert gases or erosions, are part of the modern periodic table's 18th group. This group is made up of the following individuals: Helium is a kind of gas (He) Neon (Ne) Argon is a gas (Ar) Krypton  (Kr) Xenon is a kind of xenon gas (Xe) Radon is a gas that can cause cancer (Rn) Noble gases exist in a gaseous state under typical temperature and pressure conditions. Because all noble gases have stable electronic structures, they have very little chemical reactivity. They are monoatomic gases that do not readily form molecules. 'ns2np6' represents the basic electrical configuration of noble gases. As a result, noble gases' outermost valence shells can be deemed 'complete.' The chemical inertness of the group of 18 elements is due to this. Because of the stability of certain elements, these gases form a group. These stable elements' crusts are totally filled. Regardles...
Post a Comment
Read more

CS Executive

At  Takshila Learning  we provide you Video Lecture of best faculties in India. We assure you not only the best quality of videos but also best content. Our teachers way of teaching, presentation and explanation is very simple and unique. Why Takshila Learning? We can give you 10 top reasons why you should take CS Executive Online Video Coaching Classes Lectures from Takshila Learnings. We are providing online classes of CS Executive for last 5 years (almost  oldest in the market ) We pick  best teachers  for every subjects. We don’t provide updates only with old videos. Infact we provide  new updated classes  for every attempt Our teachers update notes for every attempt. Videos and notes are  highly exams oriented . Our teachers  cover last 5 attempts question papers  along with ICSI Course content. Our video classes  includes live practical examples  to help you understand easily. Our structure of our  fee ...
Post a Comment
Read more