hamburger
×
Digit General Insurance Logo
Powered By Digit
mobile-img

Get your ABHA Card Online

Create and Download Instantly

desktop-img

31 Different Diseases Caused by Microorganisms

What Is a Microorganism?

What are Microorganism Diseases?

What are the Causes Of Microorganism Diseases?

What are the Types of Microorganisms that Can Cause Diseases?

The major groups or types of microorganisms are as follows:

Microorganism Description
Bacteria Bacteria are prokaryotic microbes with a single cell and a nucleus without a membrane. They can be of various shapes, such as rods, spheres, and spirals. People already have billions of harmless bacteria present in the body. However, the ones that invade your body from the outside cause severe illness.
Viruses Viruses are majorly responsible for causing diseases among human beings. They are microscopic agents that require a living cell of another organism to reproduce. Viruses infect all life forms, including plants, animals, humans, bacteria, and archaea.
Fungi It is a eukaryotic microorganism with DNA closed in a membrane, forming a nucleus. Fungi can be in unicellular or extremely complex multicellular forms. Not all fungi affect your body, but the harmful ones cause some acute diseases.
Protozoa Protozoa are a group of unicellular eukaryotes that can live independently or as parasites. They generally feed on other living matter, such as debris, microbes, or organic tissues. One example of protozoa is the amoeba, which can change shape. Another example is the Paramecium, which has a complex structure and fixed shape.

List of Diseases Caused by Microorganisms

Diseases Caused by Bacteria

Bacterial diseases are caused by pathogenic bacteria that invade the body, leading to various health issues. The list of diseases is given below:

S. No. Name of Diseases Causative Agent Mode of Transmission
1 Tuberculosis Mycobacterium Tuberculosis Air
2 Typhoid Salmonella Typhi Water
3 Pneumonia Haemophilus Influenza and Streptococcus Pneumoniae Droplets of sneeze in the air
4 Cholera Vibrio Cholerae Food and water
5 Anthrax Bacillus Anthraces Contact with contaminated meat
6 Diphtheria Corynebacterium Diphtheriae Air or contact with an infected agent
7 Citrus Canker Xanthomonas Axonopodis Air
8 Acne Vulgaris Propionibacterium Acnes Direct contact with the infected person
9 Plague Yersinia pestis Air and direct contact
10 Peptic Ulcers Helicobacter Pylori N/A

Diseases Caused by Virus

Viral diseases are caused by viruses, which are microscopic infectious agents that require a host cell to replicate. The table below has the names of such diseases:

S. No. Name of Diseases Causative Agent Mode of Transmission
1 Cold, cough, and flu Rhinoviruses Respiratory droplets in the air
2 AIDS HIV or Human Immunodeficiency Virus Exchange of blood, semen, and vaginal and rectal fluids breast milk
3 Ebola Ebola virus Infected animal
4 Dengue Flavivirus Aedes mosquito (female)
5 Chikungunya Chikungunya virus Aedes Aegypti and Aedes Albopictus mosquito
6 Smallpox Variola major and minor Air, water, and direct contact with an infected agent
7 Chicken Pox Varicella zoster virus Air and direct contact
8 Hepatitis B Hepatitis B virus Blood Exchange or sexually transmitted
9 Polio or Poliomyelitis Poliovirus Water, mouth, or body waste
10 Zika Zika virus Aedes Aegypti and Aedes Albopictus mosquito
11 Measles Measles virus Air
12 Oral and foot diseases Picornavirus or Genus Aphthovirus Animal and close contact with the infected agent
13 Covid-19 Coronavirus Respiratory droplets in the air and direct contact

Diseases Caused by Fungi

Fungal diseases are caused by pathogenic fungi that can infect various parts of the body. Check the names of diseases caused by Fungi below:

S. No Name of Diseases Causative Agent Mode of Transmission
1 Rust of wheat Micro Trichophyton and Epidermophyton fungi Contact with infected skin
2 Ringworms Puccinia Rust fungus Air and seeds

Diseases Caused by Protozoa

Protozoal diseases are caused by single-celled organisms known as protozoa. These infections often require specific antiprotozoal medications for treatment.

S. No. Name of Diseases Causative Agent Mode of Transmission
1 Malaria Plasmodium Malaria, Plasmodium Vivax, and Plasmodium Falciparum Anopheles mosquito (female)
2 Sleeping Sickness Trypanosoma Infected tsetse fly
3 Amoebic Dysentery and Amoebiasis Entamoeba Histolytica Impure water and food
4 Visceral Leishmaniasis or Kala-Azar Leishmania genus Sandflies
5 Ladies Finger or Yellow Vein Yellow Vein Mosaic virus Insect
6 Dysentery Leishmania N/A

These lists consist of diseases caused by microorganisms and their transmission agents. Some of these may make you fall sick or make you suffer for a long time.

What Are the Harmful Effects of Microorganisms?

Signs and Symptoms of Diseases Caused by Microorganisms

Risk Factors Associated With Diseases Caused by Microorganisms

The risk factors associated with diseases caused by microorganisms vary depending on the type of microorganism (bacteria, viruses, fungi, or parasites) and the disease. Nevertheless, common risk factors include:

Risk Factors Description
Weakened Immune System Susceptibility is higher among individuals with compromised immune systems, which results from conditions such as cancer and HIV/AIDS.
Chronic Diseases Diabetes, chronic lung disease, and cardiovascular diseases can make one more susceptible to infections. These conditions weaken the body, increasing susceptibility.
Age Very young children or elderly people are at a greater risk because their immunity is underdeveloped or weakened respectively.
Lifestyle Factors Unsanitary habits, such as poor hygiene practices, inadequate sanitation, or unsafe food preparation, increase the chances of contact with harmful microbes.
Travel and Exposure Travelling to areas where there are high incidences of certain illnesses or coming into contact with infected persons raises risks. Be careful when doing so.
Environmental Factors The likelihood of infections is higher if a person lives in unsuitable housing conditions, such as overcrowded places where he/she may be exposed to dirty water or air.
Genetics Infection susceptibility depends on genetic predispositions in an individual. If the person is genetically weak, they will automatically be at risk.
Antibiotic Resistance Resistance strains are developed due to excessive use and misuse of antibiotics to treat microorganisms, thereby complicating infection treatment strategies.
Vaccination Status Failure to be vaccinated against preventable diseases raises the chances of becoming infected. Once these risk factors are identified, prevention measures can be introduced.

How to Diagnose Diseases Caused by Microorganisms?

Diagnostic procedures for diseases infected with microorganisms incorporate various methods that apply to all forms of infection and categories of pathogens. Common techniques of diagnosis are listed below:

Diagnosis 

Description 

Clinical Evaluation

Through a detailed medical history and physical examination, one can conclude with an estimate of the symptoms and risks of exposure.

Laboratory Tests

  • Microbial Cultures: By culturing microorganisms from specimens like blood, urine, or even sputum, we can pinpoint the identity of the pathogenic organism. The technique is most often applied to bacterial and fungal infections.
  • Microscopy: The process of visualising microorganisms or structures indicating their presence under a microscope, for example, Gram staining for bacteria and KOH for fungi.  
  • Polymerase Chain Reaction (PCR): This technique amplifies and detects specific genetic material from pathogens, making it useful for both bacterial and viral infections.
  • Serology: A technique of amplifying and detecting tiny quantities of pathogen-specific genetic material. It is useful in both bacterial and viral infections.

Imaging Studies

Techniques such as X-rays, CT scans, or MRIs can diagnose infections of tissues and organs, particularly if the physical exam and lab tests are inconclusive.

Biopsy

A tissue sample may need to be obtained to diagnose some infections, particularly of the tissues and organs, as is true of some fungal and parasitic infections.

Rapid Diagnostic Tests

These tests are quick in their results for identifying specific pathogens, such as rapid strep tests and tests for influenza.

Molecular Diagnostics

Through techniques like next-generation sequencing (NGS), pathogens and resistance profiles can be identified over a broad range by the analysis of genetic material.

Treatment Methods for Diseases Caused by Microorganisms

What are the Preventive Measures to Control Diseases Caused by Microorganisms?

Generally, methods for controlling and treating diseases would involve reducing exposure and strengthening immune defense. Such strategies include:

Preventive Measures Description
Vaccination Immunising people against certain pathogens to protect against infection.
Hygiene and Sanitation Frequent hand-washing, safely handling food, and having clean water sources to reduce microorganism exposure.
Safe Food Practices Cooking all food thoroughly, avoiding unpasteurised dairy products, and storing foods appropriately.
Use of PPE Gloves, masks, and other protective equipment are used in healthcare and high-risk settings.
Antimicrobial Stewardship Careful use of antibiotics and antivirals to avert resistance so they remain effective.
Infection Control Measures Sterilisation, isolation, and other measures are instituted in health institutions against hospital-acquired infections.
Public Health Education Educate the public about the prevention practices of diseases and their symptoms to prompt early intervention.

Does Health Insurance Cover Disease Caused by Microorganisms?

FAQs about Diseases Caused by Microorganisms