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Know the Difference Between Communicable and Non-Communicable Diseases

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Last updated date: 03rd May 2024
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Difference Between Communicable and Non-communicable Diseases: A Brief View

Disease is an abnormal internal condition that affects the normal body functioning of a living organism. It is caused due to external factors such as bacteria, viruses, parasites, exposure to toxins or gene mutations. They are classified into two main categories – acquired and congenital. Acquired diseases are further grouped into communicable and non-communicable diseases.

 

The main difference between communicable and non-communicable diseases is that the former is contagious, which means it can be transmitted from one individual to another. On the other hand, non-communicable diseases are not infectious. The discussions below will give you an idea about the difference between communicable diseases and non-communicable diseases.

 

Communicable Diseases

As the name suggests, those diseases which are contagious and spread from one individual to another directly or indirectly are called infectious diseases. They spread through insect or animal bites, external pathogens or microorganisms that enter our body in a variety of ways. As mentioned before, this is one of the main differences between communicable and non-communicable diseases.

 

For instance, you may wonder if typhoid is communicable or non-communicable and how it spreads. The section below will give you an idea.

 

Given Below Are Some of the Ways Through Which Infectious Diseases Can Spread – 

Infectious diseases can be transmitted from one person to another through physical contact with an infected person. It includes droplets, fecal or oral transmission, sexual intercourse, etc.

  1. One can get infected by touching any contaminated surface or object such as blood, water, food. 

  2. Infectious diseases such as dengue, malaria, the plague spread via bites from carrier animals or insects who carry the virus.

  3. Some infectious diseases are airborne.

 

List of Infectious Diseases

Some common contagious diseases include – 

  • Ebola.

  • Flu.

  • Hepatitis A.

  • Hepatitis B.

  • HIV/AIDS.

  • Measles.

  • Tuberculosis.

  • Mumps.

  • Chickenpox.

  • Cholera.

 

Preventive Measures

The spread of infectious diseases should be controlled as quickly as possible to avoid substantial loss of life. Here are some of the preventive measures that should be adopted – 

  1. Proper sanitation. 

  2. Keeping the surroundings clean. 

  3. Vaccination. 

  4. Avoid sharing personal use items such as toothbrushes.

 

Proper awareness regarding infectious diseases is crucial not only from an exam point of view. It also helps you to understand whether certain illnesses such as dengue are communicable or non-communicable diseases and goes a long way towards the prevention of the same.

 

Non-Communicable Diseases

Diseases which are not transmitted from one person to another are known as non-communicable diseases. They are also known as chronic diseases. Some interesting facts about this disease group have been given below – 

  1. They usually persist for a long time and in some cases throughout a person’s life. 

  2. These illnesses require extensive treatment and cannot be cured through vaccination. It is another main difference between communicable and non-communicable diseases.

  3. Non-communicable diseases are the leading cause of death every year all over the world.

 

The major non-communicable disease groups are – 

  • Cardiovascular diseases.

  • Chronic respiratory disease.

  • Cancer.

  • Diabetes.

 

Apart from these, non-contagious diseases include arthritis and related conditions, epilepsy and seizures, oral problems, digestive health problems, kidney disorders etc. Genetic and mental diseases also fall under the category of non-communicable diseases.

 

Causes of Non-Communicable Diseases

Yet another massive difference between communicable and non-communicable diseases are the causes of illness. According to the World Health Organisation, the significant risk factor that are responsible for non-contagious diseases are – 

  • Physical inactivity.

  • Unhealthy dietary habits.

  • Excessive alcohol consumption.

  • Use of tobacco and harmful drugs.

  • High blood pressure and blood sugar level.

  • Obesity.

  • High cholesterol levels.

 

Other than the ones mentioned above, there are other risk factors such as demography, environment and genetics that also play a significant role. 

 

Consequently, some of the ways one can follow to prevent non-contagious disease are given below – 

  • Exercising daily. 

  • Going for regular check-ups.

  • Reducing alcohol and tobacco consumption.

  • Strictly monitoring food habits to keep blood pressure, sugar and cholesterol levels in check.

 

The main difference between communicable and non-communicable diseases is highlighted in the table below. It will help you memorize the crucial points quickly while you are revising for your examinations. 

 

Difference Between Communicable Disease and Non-Communicable Diseases


Communicable Disease 

Non-Communicable Disease

They are contagious diseases that spread from one person to another.

As the name suggests, they are not transmitted from one individual to another.

They are caused by agents like viruses, bacteria, parasites, etc.

These diseases are caused due to a combination of several aspects such as environmental factors, dietary habits, physiological and genetic factors.

Infectious diseases can be prevented by following some measures such as vaccination, keeping one’s surroundings clean, disinfecting surfaces regularly, washing hands, etc.

These types of diseases can be prevented by minimising the risk factors by maintaining daily exercise, regular medical check-up, and a healthy diet.

Infectious diseases cannot be inherited. 

Some Non-communicable diseases are inherited.

Examples include cholera, malaria, dengue, AIDS, typhoid, common cold and flu.

Examples include cardiovascular diseases, cancer, diabetes, allergies, and Alzheimer’s.

 

Good Luck for Your Exams

So, NEET is just around the corner, and you are probably at the last and most crucial phase of your revision. At this stage, apart from knowing all the inherent concepts such as the difference between communicable and non-communicable diseases thoroughly, you should also have an idea about the exam pattern and structure. 

 

At this stage, you should also make it a point to appear for as many mock tests as possible. It will improve your speed and accuracy and help you to revise how to tackle difficult topics such as differentiating between communicable and non-communicable diseases.

 

A non-transferable infection (NCD) is an illness that isn't contagious straightforwardly starting with one individual then onto the next. NCDs incorporate Parkinson's illness, immune system infections, strokes, most heart sicknesses, most malignant growths, diabetes, ongoing kidney illness, osteoarthritis, osteoporosis, Alzheimer's infection, waterfalls, and others. NCDs might be persistent or intense. Most are non-irresistible, despite the fact that there are some non-transmittable irresistible sicknesses, for example, parasitic infections in which the parasite's life cycle does exclude direct host-to-have transmission.


NCDs are the main source of death internationally. In 2012, they caused 68% of all deaths (38 million) up from 60% in 2000. About half were under age 70 and a half were women. Risk factors, for example, an individual's experience, way of life and climate improve the probability of specific NCDs. Consistently, something like 5 million individuals bites the dust in view of tobacco use and around 2.8 million kick the bucket from being overweight. Elevated cholesterol generally represents 2.6 million passes and 7.5 million bites the dust in light of hypertension.


Hazard Factors

Hazard factors like an individual's experience; the way of life and climate are known to improve the probability of specific non-transmittable infections. They incorporate age, sex, hereditary qualities, openness to air contamination, and practices, for example, smoking, unfortunate eating regimen and actual dormancy which can prompt hypertension and weight, thusly prompting expanded danger of numerous NCDs. Most NCDs are considered preventable on the grounds that they are brought about by modifiable danger factors.


The WHO's World Health Report 2002 distinguished five significant danger factors for non-transmittable infection in the best ten driving dangers to wellbeing. These are raised circulatory strain, raised cholesterol, tobacco use, liquor utilization, and being overweight. Different elements related to the higher danger of NCDs incorporate an individual's financial and social conditions, otherwise called the social determinants of wellbeing.


It has been assessed that assuming the essential danger factors were disposed of, 80% of the instances of coronary illness, stroke and type 2 diabetes and 40% of diseases could be forestalled. Intercessions focusing on the fundamental danger elements could altogether affect decreasing the weight of infection around the world. Endeavors zeroed in on better eating regimens and expanded active work have been displayed to control the predominance of NCDs.


Ecological Illnesses

NCDs incorporate numerous ecological illnesses covering a general class of avoidable and unavoidable human ailments brought about by outside factors, like daylight, nourishment, contamination, and way of life decisions. The sicknesses of luxuriousness are non-irresistible infections with ecological causes. Models include:

Many kinds of cardiovascular sickness (CVD)


Constant obstructive respiratory infection (COPD) brought about by smoking tobacco

Diabetes mellitus type 2


Lower back torment brought about by too little exercise


Ailing health brought about by too little food, or eating some unacceptable sorts of food (for example scurvy from absence of Vitamin C)


Skin disease brought about by radiation from the sun


Corpulence


Acquired infections


See too: List of hereditary issues


Hereditary issues are brought about by blunders in hereditary data that produce sicknesses in the impacted individuals. The beginning of these hereditary mistakes can be:


Unconstrained Mistakes or Changes to the Genome:

An adjustment of chromosome numbers, for example, Down disorder.


A deformity in quality brought about by transformation, like Cystic fibrosis.


An expansion in how much hereditary data, like Chimerism or Heterochromia.


Cystic fibrosis is an illustration of an acquired infection that is brought about by a transformation of a quality. The broken quality debilitates the typical development of sodium chloride all through cells, which causes the bodily fluid emitting organs to deliver unusually thick bodily fluid. The quality is latent, implying that an individual should have two duplicates of the flawed quality for them to foster the illness. Cystic fibrosis influences the respiratory, stomach-related, and conceptual frameworks, just as the perspiration organs. The bodily fluid emitted is exceptionally thick and squares paths in the lungs and gastrointestinal systems. This bodily fluid causes issues with breathing and with the processing and assimilation of supplements.


Acquired Hereditary Blunders From Guardians:

Prevailing hereditary illnesses, like Huntington's, require the legacy of one mistaken quality to be communicated.


Latent hereditary illnesses require the legacy of mistaken qualities to be communicated and this is one explanation they cooperate.


Worldwide wellbeing


Passings from noncommunicable illnesses per million people in 2012

  688-2,635


  2,636-2,923


  2,924-3,224


  3,225-3,476


  3,477-4,034


  4,035-4,919


  4,920-5,772


  5,773-7,729


  7,730-8,879


  8,880-13,667


Alluded to as a "way of life" infection, in light of the fact that most of these illnesses are preventable ailments, the most widely recognized reasons for non-transmittable illnesses (NCD) incorporate tobacco use (smoking), risky liquor use, horrible eating routines (maximum usage of sugar, salt, soaked fats, and trans unsaturated fats) and actual dormancy. Right now, NCD kills 36 million individuals every year, a number that by certain assessments is relied upon to ascend by 17–24% inside the following decade.


All things considered, numerous NCDs were related to the monetary turn of events and were alleged to a "sicknesses of the rich ''. The weight of non-transmittable sicknesses in emerging nations has expanded in any case, with an expected 80% of the four principal kinds of NCDs — cardiovascular illnesses, malignant growths, constant respiratory infections and diabetes — presently happening in low-and center pay nations. Activity Plan for the Global Strategy for the Prevention and Control of non-transmittable Diseases and with 66% of individuals who are impacted by diabetes currently living in non-industrial countries, NCD can presently don't be viewed as an issue influencing the well-off assessment of the monetary effect of persistent non-transferable infections in chose nations. New WHO report: passings from non-transferable sicknesses are on the ascent, creating the world hit hardest. As recently expressed, in 2008 alone, NCDs were the reason for 63% of deaths around the world; a number that is relied upon to rise extensively soon assuming measures are not taken.


In the event that current development patterns are kept up with, by 2020, NCDs will ascribe to 7 out of each 10 passings in emerging nations, killing 52 million individuals yearly worldwide by 2030. With measurements, for example, these, it does not shock anyone that worldwide substances like the World Health Organisation and World Bank Human Development Network have distinguished the avoidance and control of NCDs as an undeniably significant conversation thing on the worldwide wellbeing plan.


Hence, should strategy creators and networks activate "and make counteraction and designated treatment of such illnesses a need," supportable measures can be executed to deteriorate (and in the end even opposite) this arising worldwide wellbeing danger. Potential measures presently being examined by the(World Health Organisation)- Food and Agriculture Organisation remembers decreasing the degrees of salt for food sources, restricting unseemly promoting of undesirable food sources and non-cocktails to kids, forcing controls on unsafe liquor use, increasing government rates on tobacco, and enacting to check smoking in broad daylight places.


United Nations

The World Health Organisation is the specific office of the United Nations (UN) that goes about as a planning expert on global general medical problems, including NCDs. In May 2008, the 193 Member States of the WHO endorsed a six-year plan to address non-transmittable illnesses, particularly the quickly expanding trouble in low-and center pay nations. The arrangement calls for raising the need given to NCDs in worldwide advancement work'.


During the 64th meeting of the United Nations General Assembly in 2010, a goal was passed to require an undeniable level gathering of the General Assembly on the counteraction and treatment of NCDs with the investment of heads of state and government. The goal likewise urged the UN Member States to resolve the issue of non-transmittable infections at the 2010 Review Summit for the Millennium Development Goals.


Worldwide Non-Transferable Disease Network

To more readily arrange endeavors all over the planet, in 2009 the WHO declared the dispatch of the Global Non-transferable Disease Network (NCDnet). NACDnet will consist of driving wellbeing associations and specialists from around the world to battle against infections like a malignant growth, cardiovascular sickness, and diabetes. Ala Alwan, aide chief general for Non-transferable Diseases and Mental Health at the WHO said: "incorporating the anticipation of non-transmittable infections and wounds into the public and worldwide advancement plans isn't just feasible yet additionally really important for creating countries."


NCD Alliance

The NCD Alliance is a worldwide association established in May 2009 by four global organizations addressing cardiovascular sickness, diabetes, malignant growth, and persistent respiratory illness. The NCD Alliance unites about 900 public part relationships to battle non-transferable sickness. Long haul points of the Alliance include:


NCD/sickness public designs for all


A tobacco liberated world


Further developed ways of life


Reinforced wellbeing frameworks


Worldwide admittance to reasonable and great quality medications and advances

Common freedoms for individuals with NCDs.


Joined Nations Interagency Task Force on the Prevention and Control of Non-transmittable Diseases (UNIATF)


The United Nations Interagency Task Force on the Prevention and Control of Non-transmittable Diseases (UNIATF) was set up by the United Nations Secretary-General in 2013 to give increased activity across the UN framework to help state-run administrations, specifically in low-and center pay nations, to handle non-transferable illnesses (NCDs).


Youthful Professionals Chronic Disease Network


The Young Professionals Chronic Disease Network regularly alluded to as YP-CDN, is a worldwide organization of approximately 5000 youthful experts across 157 nations. The association plans to activate these youngsters "to make a move against social shamefulness driven by NCDs."


Financial Matters

Already, constant NCDs were viewed as an issue restricted generally to big-league salary nations, while irresistible sicknesses appeared to influence low pay nations. The weight of sickness credited to NCDs has been assessed at 85% in industrialized countries, 70% in centre pay countries, and almost half in nations with the most minimal public incomes. In 2008, persistent NCDs represented over 60% (north of 35 million) of the 57 million passports around the world. Given the worldwide population conveyance, practically 80% of passes due to constant NCDs overall currently happen in low and center pay nations, while just 20% happen in higher pay nations.


Public economies are supposedly experiencing critical misfortunes in light of unexpected losses or powerlessness to work coming about because of coronary illness, stroke, and diabetes. For example, China is relied upon to lose generally $558 billion in public pay somewhere in the range of 2005 and 2015 because of early passings. In 2005, coronary illness, stroke and diabetes caused an expected misfortune in global dollars of public pay of 9 billion in India and 3 billion in Brazil.


Non-Attendance and Presenteeism

The weight of constant NCDs including psychological wellness conditions is felt in working environments all over the planet, prominently because of raised degrees of non-attendance, or nonappearance from work due to sickness, and presenteeism, or usefulness lost from staff coming to work and performing underneath ordinary norms because of chronic frailty. For instance, the United Kingdom encountered a deficiency of around 175 million days in 2006 to nonattendance from ailment among a functioning populace of 37.7 million individuals. The assessed cost of nonappearances because of disease was more than 20 billion pounds in the equivalent year. The expense because of presenteeism is logically significantly bigger, despite the fact that strategies for investigating the monetary effects of presenteeism are as yet being created. Techniques for dissecting the unmistakable working environment effects of NCDs versus different kinds of medical issues are likewise as yet being created.


Key sicknesses


Malignant growth


For by far most tumors, hazard factors are ecological or way of life-related, in this manner diseases, are generally preventable NCD. Greater than 30% of malignant growth is preventable by means of keeping away from hazard factors including tobacco, being overweight or corpulence, low leafy foods admission, actual dormancy, liquor, physically communicated contaminations, and air pollution. Infectious specialists are answerable for certain tumors, for example, practically all cervical diseases are brought about by human papillomavirus contamination.


Cardiovascular Infection

The primary examinations on cardiovascular wellbeing were acted in 1949 by Jerry Morris utilising word related wellbeing information and were distributed in 1958. The causes, avoidance, or potential therapy of all types of cardiovascular infection stay in dynamic fields of biomedical exploration, with many logical investigations being distributed consistently. A pattern has arisen, especially in the mid-2000s, in which various investigations have uncovered a connection between cheap food and an increment in coronary illness. These investigations incorporate those directed by the Ryan Mackey Memorial Research Institute, Harvard University, and the Sydney Centre for Cardiovascular Health. Many significant inexpensive food chains, especially Mcdonald's, have fought the techniques utilized in these examinations and have reacted with better menu choices.


A genuinely late accentuation is on the connection between poor quality irritation that trademarks atherosclerosis and its potential mediations. C-receptor protein (CRP) is a typical fiery marker that has been viewed as present in expanded levels in patients in danger of cardiovascular disease. Also, osteoprotegerin which is associated with the guideline of a key incendiary record factor called NF-κB has been viewed as a danger variable of cardiovascular illness and mortality.


Diabetes

Type 2 Diabetes Mellitus is a constant condition that is generally preventable and reasonable however hard to fix. The executives focus on keeping glucose levels as near typical ("euglycemia") as conceivable without introducing unnecessary patient risk. This can typically be with close dietary administration, exercise, and utilization of suitable drugs (insulin just on account of type 1 diabetes mellitus. Oral drugs might be utilized on account of type 2 diabetes, just as insulin).


Patient instruction, comprehension, and cooperation are indispensable since the confusions of diabetes are undeniably more uncommon and less extreme in individuals who have all around overseen glucose levels.  Wider medical conditions might speed up the harmful impacts of diabetes. These incorporate smoking, raised cholesterol levels, heftiness, hypertension, and the absence of normal exercise.


Persistent Kidney Sickness

Albeit persistent kidney sickness (CKD) isn't right now recognized as one of WHO's primary focuses for worldwide NCD control, there is convincing proof that CKD isn't just normal, unsafe and treatable yet, in addition, a significant contributing variable to the occurrence and results of somewhere around three of the illnesses designated by WHO (diabetes, hypertension and CVD).[18] CKD firmly inclines to hypertension and CVD; diabetes, hypertension and CVD are largely significant reasons for CKD; and significant danger factors for diabetes, hypertension and CVD (like weight and smoking) likewise cause or compound CKD. What's more, among individuals with diabetes, hypertension, or CVD, the subset who additionally have CKD are at the most elevated danger of antagonistic results and high medical care costs. Accordingly, CKD, diabetes and cardiovascular illness are firmly related conditions that regularly exist together; share normal danger variables and medicines, and would profit from an organized worldwide way to deal with counteraction and control.


Persistent Respiratory Sickness

Ongoing Respiratory Diseases (CRDs) are illnesses of the lungs and aviation routes. As per the World Health Organization (WHO) a huge number of individuals experience the ill effects of CRDs. Common CRDs are Asthma, Chronic obstructive respiratory illness, Occupational lung sickness, and Pulmonary hypertension. While CRDs are not repairable, different therapies are accessible to assist with working on personal satisfaction for people who have them. Most medicines include expanding significant aviation routes to further develop windedness among other symptoms. The primary danger factors for creating CRDs are tobacco smoking, indoor and open-air contamination, allergens, and work-related risks.


WHO aided the Global Alliance against Chronic Respiratory Diseases (GARD) in 2006. GARD is intentionally made out of public and worldwide associations and pursues "lessening the worldwide weight of ongoing respiratory infections" and spotlight chiefly on weak populaces and low and center pay nations.

FAQs on Know the Difference Between Communicable and Non-Communicable Diseases

1. What does the Term ‘Quarantine’ Imply?

Individuals or animals who have been exposed to any case of infectious disease during its outbreak are ‘quarantined’, or their activities are restricted to prevent the further spread of the disease. 

2. What Do You Mean by the Term ‘Risk Factors’ for Diseases?

The term ‘risk factor’ means conditions, behaviors or characteristics that increase the chances of disease. The main risk factors for non-communicable diseases are (i) high blood pressure or hypertension (ii) obesity (iii) high blood sugar levels, etc.

3. What is Meant by the Term (a) Carrier (b) Case?

A ‘carrier’ is a person or animal who harbors the infection but shows no outward symptoms. A ‘case’ is an individual or animal who carries the disease and exhibits symptoms. Both carry the risk of spreading the virus.

4. What are the Approaches Taken by India towards Controlling Communicable Diseases?

India has focused on strengthening public health services and launched several sanitation and hygiene programs to control infectious diseases.

5. Explain Diabetes.

Diabetes

Type 2 Diabetes Mellitus is a constant condition that is generally preventable and reasonable however hard to fix. The executives focus on keeping glucose levels as near typical ("euglycemia") as conceivable without introducing unnecessary patient risk. This can typically be with close dietary administration, exercise, and utilization of suitable drugs (insulin just on account of type 1 diabetes mellitus. Oral drugs might be utilized on account of type 2 diabetes, just as insulin).


Patient instruction, comprehension, and cooperation are indispensable since the confusions of diabetes are undeniably more uncommon and less extreme in individuals who have all around overseen glucose levels.  Wider medical conditions might speed up the harmful impacts of diabetes. These incorporate smoking, raised cholesterol levels, heftiness, hypertension, and the absence of normal exercise.