Write short note on communicable and noncommunicable disease
Communicable diseases are spread from person to person or from animal to person. The spread or transfer can happen through the air, through contact with contaminated surfaces, or through direct contact with blood, feces, or other bodily fluids. A cold is an example of a communicable disease (a cold is the general term given to a viral infection of the upper respiratory tract).
This is probably why those airline passengers mentioned at the start of this lesson were wearing masks. Viruses in the respiratory passageways can easily be coughed or even just breathed out. So, if the inconsiderate cold-carrier sitting next to you on the plane coughs, viruses are spewed into your vicinity. You breathe, and suddenly those viruses have found a new respiratory tract to call home (yours!). That cold has now been passed from one infected person to another uninfected person, spreading the communicable disease.
You can probably identify other communicable diseases. If a disease is caused by viruses, bacteria, fungi, or protozoa it's likely, although not always, communicable. Rabies, HIV, malaria, influenza, and athlete's foot are just a few examples of communicable diseases you may be familiar with.
Noncommunicable Diseases
What about other things like cancer, heart disease, and diabetes? You can't 'catch' these, right? These are examples of noncommunicable diseases , which are medical conditions that are not infectious and cannot be passed from one person or animal to another. Your fellow passenger with diabetes was either born with it or developed it later in life. Either way, you cannot 'catch' diabetes.
Diabetes is one of the four most common noncommunicable diseases . You've likely heard of the other three: heart disease, cancer, and chronic respiratory diseases (like asthma). It's a good thing you can't catch these diseases from others, because these four noncommunicable diseases kill roughly 30 million people per year worldwide.
Communicable diseases are spread from person to person or from animal to person. The spread or transfer can happen through the air, through contact with contaminated surfaces, or through direct contact with blood, feces, or other bodily fluids. A cold is an example of a communicable disease (a cold is the general term given to a viral infection of the upper respiratory tract).
This is probably why those airline passengers mentioned at the start of this lesson were wearing masks. Viruses in the respiratory passageways can easily be coughed or even just breathed out. So, if the inconsiderate cold-carrier sitting next to you on the plane coughs, viruses are spewed into your vicinity. You breathe, and suddenly those viruses have found a new respiratory tract to call home (yours!). That cold has now been passed from one infected person to another uninfected person, spreading the communicable disease.
You can probably identify other communicable diseases. If a disease is caused by viruses, bacteria, fungi, or protozoa it's likely, although not always, communicable. Rabies, HIV, malaria, influenza, and athlete's foot are just a few examples of communicable diseases you may be familiar with.
Noncommunicable Diseases
What about other things like cancer, heart disease, and diabetes? You can't 'catch' these, right? These are examples of noncommunicable diseases , which are medical conditions that are not infectious and cannot be passed from one person or animal to another. Your fellow passenger with diabetes was either born with it or developed it later in life. Either way, you cannot 'catch' diabetes.
Diabetes is one of the four most common noncommunicable diseases . You've likely heard of the other three: heart disease, cancer, and chronic respiratory diseases (like asthma). It's a good thing you can't catch these diseases from others, because these four noncommunicable diseases kill roughly 30 million people per year worldwide.
