Causes and Symptoms of Infectious Diseases

Infectious Diseases are disorders caused by organisms — like bacteria, viruses, fungi, or parasites. Numerous organisms sleep in and on our bodies. They're normally harmless or even helpful. But under specific conditions, some organisms may cause disease. Some infectious diseases can be transferred from person to person. Some are transmitted by insects or other animals. And you’ll get others by consuming contaminated food or water or being exposed to organisms within the environment.

Causes: Infectious diseases spread in multiple ways. In many cases, direct contact with a sick individual, either by skin-to-skin contact (including sexual contact) or by touching something another person touches, transmits the disease into a replacement host. Contact with body fluids, like blood and saliva, also spreads infectious diseases.

Some diseases spread through droplets discharged from a sick person’s body once they cough or sneeze. These droplets linger within the air for a brief period of time, landing on a healthy person’s skin or inhaled into their lungs.

Infectious diseases can be caused by:

Bacteria: These single-cell organisms are responsible for illnesses such as strep throat, urinary tract infections, and tuberculosis.
Viruses: Even smaller than bacteria, viruses cause multiple diseases ranging from the common cold to AIDS.
Fungi: Many skin diseases, like ringworm and tinea pedis, are caused by fungi. Other sorts of fungi can infect your lungs or systemic nervosum.
Parasites: Malaria is caused by a small parasite that is transmitted by a mosquito bite. Other parasites could also be transmitted to humans from animal feces.

Symptoms: You may undergo one or several symptoms of an infectious disease. It’s important to ascertain a doctor if you’ve got any chronic (ongoing) symptoms or symptoms that get worsen over time. Each infectious disease will have its own specific signs and symptoms. General signs and symptoms common to a variety of infectious diseases include:

Fever
Diarrhoea
Fatigue
Muscle Aches
Coughing
Running Nose
Allergies

Committee Members

Speaker at World Congress on Infectious Disease 2025 - Reza Nassiri

WCID 2025 Speakers

Speaker at World Congress on Infectious Disease 2025 - Johnson J H Wang

Submit your abstract Today

Click Here

Causes and Symptoms of Infectious Diseases

Saurabh Chattopadhyay, University of Kentucky College of Medicine, United States

Anant Marathe, Parul University, India

Shyam Sundar, Banaras Hindu University, India

Sunita Girish, Dr. D. Y. Patil Medical College, Hospital and Research Center, India

Erika Nnodi, University of Illinois, United States

Anila Cake, Tirana University of Medicine, Albania

Naser Khan Ghafoor Jamal, Tbilisi State Medical University, Georgia

Hongwu Xin, Qilu Medical University, China

Hua Luo, Peking University, China

Xueqing Wang, Peking University, China

Xiaolei Hu, Shapingba Hospital, China

Xiaojun Shen, Peking University, China

Kundoly Velayudhan Suseela, Amala Institute of Medical Sciences, India

Asmabanu Shaikh, Parul University, India

Bhavita Prajapati, Parul University, India

Rakshand Shetty, KMC Hospital, India

Rakshand Shetty, KMC Hospital, India

Deen Mark G Toroy, Armed Forces of the Philippines Medical Center, Philippines

Fatima Khan, Aligarh Muslim University, India

Manuel Antonio Sierra Santos, Central American Technological University, Honduras

Farhat Oumayma, Farhat Hached Hospital, Tunisia

Degefu Beyene, Ethiopian Public Health Institute, Ethiopia

Caroline Amuche Okoli, University of Jos, Nigeria

Randa Elzein, SUNY Upstate University Hospital, United States

Doina Simona Lazar, Florida International University, United States

Hien Yeri Esther, Joseph Ki-Zerbo University, Burkina Faso

Walter Juan Molini, Hospital Provincial Neuquen, Argentina

Sitora, Tashkent Medical Academy, Uzbekistan

Submit your abstract Today

Newsletter