This is a fungal infections that enters the body through the airborne transmission. Lung infection in humans can occur with the inhalation of a single spore. It is caused the fungus C. immitis and most people who contact this diseases do not show any symptoms, or they have only very mild symptoms. If you do have symptoms, you may feel like you have a cold or the flu. You may have a fever, chills, chest pain, a dry cough, and a rash. It is commonly called valley fever and the vast majority of infections occur in endemic zones, such as California, Arizona, Mexico, and Central America.

30% to 50% of the cases are caused by rhinovirus. Symptoms: Scratchy mild sore throat, runny nose, and cough. Nasal secretion initially profuse and watery, later, thick and purulent. No fever unless complicated with secondary infection. Symptoms disappear in about a week.

This is an upper respiratory infection caused by a Gram-positive non-spore forming bacteria in the Corynebacterium genus. Symptoms: Usually begins with mild sore throat and slight fever, fatigue and dramatic neck swelling. Whitish membrane forms on tonsils, or in nasal cavity. Most strains release a toxin, which is produced only in low iron environments. It is very contagious disease spread by direct physical contact or breathing the aerosolized secretions of infected individuals. The disease has been largely eradicated through the DPT vaccine.

This disease is a potentially life-threatening condition that occurs when the small cartilage "lid" that covers your windpipe swells, blocking the flow of air into your lungs. It is caused by the bacteria Streptococcus A, B, or C and Streptococcus pneumoniae. In children signs and symptoms develop quickly, in adults they develop more slowly and include fever, severe sore throat, abnormal, high-pitched sound when breathing in (stridor), difficult and painful swallowing, drooling, anxious, and restless behavior.

Caused when the virus enters body via inhalation of dust contaminated with urine, feces and saliva of infected rodents. Early symptoms: Fever, muscle ache (Especially in the lower back), nausea, vomiting, and diarrhea. Later symptoms: Unproductive cough, increasing shortness of breath, shock and death.

This is a fungal disease that commonly occurs in the Mississippi Valley of the United States as well as in parts of Central and South America, Africa, Asia, and Australia. Causative agent is the fungus H. capsulatum, which normally grows as a filamentous mold in the environment, but grows like budding yeast during human infections. Symptoms begin within 3 to 17 days after exposure. Most individuals show no apparent ill effects. The acute phase symptoms are often a cough or flu-like. Fungal spores are often contacted from disturbed soil or guano.

Caused by three genetically related orthomyxovirus, Influenza A, B, and C. Symptoms: Short incubation period averaging 2 days, headache, fever, muscle pain, and dry cough. Acute symptoms abate within a week. Cough, fatigue and generalized weakness may linger.

This is a respiratory infection caused K. pneumoniae, a Gram-negative bacillus and is a common nosocomial pathogen. Typically, these bacteria gain access after a person aspirates normal pharyngeal bacteria colonizing microbes into the lower respiratory tract. Symptoms: Most symptoms are indistinguishable from pneumococcal pneumonia; they include cough, fever, and chest pain.

Caused by Legionella pneumophila a Gram-negative bacillus bacterium. Early symptoms: Headache, muscle ache, rapid rise in temperature, confusion, and shaking chills. Later symptoms: Dry cough, sputum production, and pleurisy. One quarter of cases develop alimentary tract symptoms. Diarrhea, abdominal pain, and vomiting

Caused by the food-borne parasitic flatworm Paragonimus westermani. Signs and symptoms: Develops slowly and symptoms may continue for years. Symptoms in the first three weeks may include diarrhea, abdominal pain, cough, fever and hives as parasite migrates from intestine to lungs. Later symptoms: fever, chest pain, fatigue, dry cough that later becomes rusty-colored or blood-tinged sputum. The infection is transmitted by eating infected crab or crayfish that is either raw, partially cooked, picked, or salted.

A viral respiratory illness that was recently recognized in humans. It is caused by the MERS coronavirus and it is also known as camel flu. Symptoms include fever, cough, and shortness of breath. Some people may have no symptoms at all.

This disease is caused by the fungi, A. fumigatus growing as a mass or clump in the paranasal cavity or in the lung. It usually occurs in someone with underlying lung disease such as Asthma, Tuberculosis, Sarcoidosis or Cystic Fibrosis. You may be asymptomatic or have signs and symptoms that include chest pain, cough, coughing up blood, fatigue, fever, and unintentional weight loss.

This is a mild disease of the lungs caused by a species of bacteria in the genus Mycoplasma. The bacteria are transmitted person-to-person through airborne droplets and it is exclusively a human pathogen. The bacteria have specialized attachment organelle that it uses to bind to ciliated cells in the lungs, which damages the cilia thereby affecting the normal functioning of the ciliary escalator. The bacteria grow slowly; symptoms usually appear 15 to 25 days after exposure. Symptoms include coughing that may come in violent spasms producing little mucus, mild flu-like symptoms, fever, sore throat, headaches, and lingering weakness.

This is one of the major viral lower respiratory infections seen in young children. Symptoms: Incubation period 1 - 4 days. Runny nose, cough and wheezing, difficulty breathing. Fever may or may not be present. Some develop dusky colored skin. One of the causes of croup in older infants.

A member of the coronavirus family causes this deadly disease. Signs and symptoms include high fever, headache, an overall feeling of discomfort, body ache, mild respiratory symptoms, and possible diarrhea. The virus is spread easily from close person-to-person contact by respiratory droplets that contact the skin or mucous membranes. It first appeared in 2003 infecting over 8,000 people and killing 774 in over two dozen countries before it was contained in 2004.

This disease is the result of a parasitic infestation cause by organisms in the Phylum Nematoda, T. canis (dog & fox roundworm) and T. cati (cat roundworm). The round worms are contacted by ingesting food that has been contaminated with the roundworm eggs. Flies feeding on feces of infected animals can transmit the roundworm eggs to food, which is then eaten by humans. Signs and symptoms: most adults are asymptomatic. Symptoms are seen when the larva begin migrating throughout the body and include cough, difficulty sleeping, abdominal pain, headaches, fatigue, and weight loss.

It is a bacterial infection that makes the throat feel sore and scratchy. It is cause is by the bacteria S. pyogenes. Signs and symptoms include throat pain that comes on quickly, painful swallowing, red and swollen tonsils that sometimes have white patches, tiny red spots on the roof of the mouth, swollen and tender neck lymph nodes, fever, headache, rash, nausea and vomiting and body aches.

Caused by the bacteria Coxiella burnetii, which usually produces a mild disease with flu-like symptoms, but can resurface years after exposure. It is transmitted to humans by sheep, goats and cattle by breathing in barnyard dust particles that are contaminated by bacteria from infected animals. Many show no symptoms; symptoms can show up from 3 to 30 days post exposure. Signs and symptoms: fever above 105 degrees; severe headaches, fatigue, cough, nausea, diarrhea and sensitivity to light.

Caused by Bordetella pertussis, a small encapsulated aerobic Gram-negative bacteria, which do not survive for long periods outside the host. Symptoms: Runny nose followed by bouts of uncontrollable coughing. Severe cough can cause rupture of small blood vessels in the eyes. Coughing spasms are followed by characteristic "whoop" sound made by the forceful inspiration of air. Vomiting and seizure may occur.