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Infectious diseases
Symptoms and causes
Symptoms
Each infectious disease has its own specific signs and symptoms. General signs and symptoms common to a number of infectious diseases include:
- Fever
- Diarrhea
- Fatigue
- Muscle aches
- Coughing
When to see a doctor
Seek medical attention if you:
- Have been bitten by an animal
- Are having trouble breathing
- Have been coughing for more than a week
- Have severe headache with fever
- Experience a rash or swelling
- Have unexplained or prolonged fever
- Have sudden vision problems
Causes
Infectious diseases can be caused by:
- Bacteria. These one-cell organisms are responsible for illnesses such as strep throat, urinary tract infections and tuberculosis.
- Viruses. Even smaller than bacteria, viruses cause a multitude of diseases — ranging from the common cold to AIDS.
- Fungi. Many skin diseases, such as ringworm and athlete’s foot, are caused by fungi. Other types of fungi can infect your lungs or nervous system.
- Parasites. Malaria is caused by a tiny parasite that is transmitted by a mosquito bite. Other parasites may be transmitted to humans from animal feces.
Direct contact
An easy way to catch most infectious diseases is by coming in contact with a person or animal who has the infection. Three ways infectious diseases can be spread through direct contact are:
- Person to person. A common way for infectious diseases to spread is through the direct transfer of bacteria, viruses or other germs from one person to another. This can occur when an individual with the bacterium or virus touches, kisses, or coughs or sneezes on someone who isn’t infected.
These germs can also spread through the exchange of body fluids from sexual contact. The person who passes the germ may have no symptoms of the disease, but may simply be a carrier.
- Animal to person. Being bitten or scratched by an infected animal — even a pet — can make you sick and, in extreme circumstances, can be fatal. Handling animal waste can be hazardous, too. For example, you can acquire a toxoplasmosis infection by scooping your cat’s litter box.
- Mother to unborn child. A pregnant woman may pass germs that cause infectious diseases to her unborn baby. Some germs can pass through the placenta. Germs in the vagina can be transmitted to the baby during birth.
Indirect contact
Disease-causing organisms also can be passed by indirect contact. Many germs can linger on an inanimate object, such as a tabletop, doorknob or faucet handle.
When you touch a doorknob handled by someone ill with the flu or a cold, for example, you can pick up the germs he or she left behind. If you then touch your eyes, mouth or nose before washing your hands, you may become infected.
Insect bites
Some germs rely on insect carriers — such as mosquitoes, fleas, lice or ticks — to move from host to host. These carriers are known as vectors. Mosquitoes can carry the malaria parasite or West Nile virus, and deer ticks may carry the bacterium that causes Lyme disease.
Food contamination
Another way disease-causing germs can infect you is through contaminated food and water. This mechanism of transmission allows germs to be spread to many people through a single source. E. coli, for example, is a bacterium present in or on certain foods — such as undercooked hamburger or unpasteurized fruit juice.
Risk factors
While anyone can catch infectious diseases, you may be more likely to get sick if your immune system isn’t working properly. This may occur if:
- You’re taking steroids or other medications that suppress your immune system, such as anti-rejection drugs for a transplanted organ
- You have HIV or AIDS
- You have certain types of cancer or other disorders that affect your immune system
In addition, certain other medical conditions may predispose you to infection, including implanted medical devices, malnutrition and extremes of age, among others.
Complications
Most infectious diseases have only minor complications. But some infections — such as pneumonia, AIDS and meningitis — can become life-threatening. A few types of infections have been linked to a long-term increased risk of cancer:
- Human papillomavirus is linked to cervical cancer
- Helicobacter pylori is linked to stomach cancer and peptic ulcers
- Hepatitis B and C have been linked to liver cancer
In addition, some infectious diseases may become silent, only to appear again in the future — sometimes even decades later. For example, someone who’s had a chickenpox infection may develop shingles much later in life.
http://www.mayoclinic.org/diseases-conditions/infectious-diseases/symptoms-causes/dxc-20168651
5 COMMENTS
agnes machili
April 4, 2017, 10:48 pm REPLYThanks dr abiola for good work for healing my brother for HIV sickness I was very sick for a year + and my daddy have to spend so much money on medical care and drug I have been taking to some many place for healing … even different pastor have pray For him it get worse every 6hous the man that heal with 45mins is here the man that the lord god have given the power to put every thing in place the man that gives a word and never fails my kid brother was just chatting one day when he See this post of mayra about the curing of HIV virus by DR Abiola I run to my daddy and tell him about the man my daddy decided to call him and confirm it if it is true about the cure the man just assure him about his work Hepatitis B, ALS, MND, Epilepsy, Leukemia, Asthma, Cancer, HIV, Herpes etc, at first i doubted if it was real but decided to give it a try , When i contact this herbal Dr.ABIOLA via his email: deadly.diseases.cure@hotmail.com, and my daddy explain him problem to him and he told my daddy that he is going to prepare herbal medicine and sent it to me, when my daddy received this herbal medicine portion, he gave me step by Step instructions on how to use it, when my brother applied it as instructed, in 14 days, so my brother went to check up and he was cured of this deadly disease within 2 weeks, he is now cure and free from hiv. All thanks to Dr.ABIOLA. Contact this great herbal cure via his email deadly.diseases.cure@hotmail.com or webs sit deadlydiseasescure.webs.com or call him on +2348100609098
agnes machili
April 4, 2017, 10:48 pm REPLYThanks dr abiola for good work for healing my brother for HIV sickness I was very sick for a year + and my daddy have to spend so much money on medical care and drug I have been taking to some many place for healing … even different pastor have pray For him it get worse every 6hous the man that heal with 45mins is here the man that the lord god have given the power to put every thing in place the man that gives a word and never fails my kid brother was just chatting one day when he See this post of mayra about the curing of HIV virus by DR Abiola I run to my daddy and tell him about the man my daddy decided to call him and confirm it if it is true about the cure the man just assure him about his work Hepatitis B, ALS, MND, Epilepsy, Leukemia, Asthma, Cancer, HIV, Herpes etc, at first i doubted if it was real but decided to give it a try , When i contact this herbal Dr.ABIOLA via his email: deadly.diseases.cure@hotmail.com, and my daddy explain him problem to him and he told my daddy that he is going to prepare herbal medicine and sent it to me, when my daddy received this herbal medicine portion, he gave me step by Step instructions on how to use it, when my brother applied it as instructed, in 14 days, so my brother went to check up and he was cured of this deadly disease within 2 weeks, he is now cure and free from hiv. All thanks to Dr.ABIOLA. Contact this great herbal cure via his email deadly.diseases.cure@hotmail.com or webs sit deadlydiseasescure.webs.com or call him on +2348100609098
richard
May 27, 2017, 11:17 pm REPLY………………………………
*I’ve been diagnosed with Crohn’s disease 2 years ago. i Tried every
treatment traditional could give me: Immunosuppressive drug, anti-tnf,
cortisone etc. Nothing worked. Medical Marijuana is my last hope.
Unfortunately I live in France. a friend introduce me to this great man
called dr jatto i told him my problem and he give me some tips about his
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thanks to dr jatto you are the best.👍👍👍 *
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richard
May 27, 2017, 11:17 pm REPLY………………………………
*I’ve been diagnosed with Crohn’s disease 2 years ago. i Tried every
treatment traditional could give me: Immunosuppressive drug, anti-tnf,
cortisone etc. Nothing worked. Medical Marijuana is my last hope.
Unfortunately I live in France. a friend introduce me to this great man
called dr jatto i told him my problem and he give me some tips about his
herbal medicine and send it to me in , i took it and i saw changes on me
thanks to dr jatto you are the best.👍👍👍 *
* contact him now +12564174927 or website address http://drjattosolutionhome.webs.com
drjattosolutionhome@gmail.com
*NOTE THAT THESE GREAT MAN CAN CURE ANY TYPES OF SICKNESS AND DISEASE
FUNGAL INFECTION
*VIRAL INFECTION
*PEYRON’ES DISEASE*
*HERPES*
*ALS*
*CANCER*
*HIV*
*LOW SPERM COUNT*
*PENIS ENLARGEMENT*
*HEPATITIS A B C
*STROKE*
*MOLLUSCUM*
*PLANTAR WART*
*DIABETES*
*INFERTILITY………..
francis
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