Infectious mononucleosis (mono) is a disease caused by viruses.The most common cause is the Epstein-Barr virus (EBV). Mono is contagious, which means it can spread from person to person. It is common among teenagers and young adults, especially college students.

Mono can be caused by many different viruses. But it is most often caused by the Epstein-Barr virus (EBV). EBV is found all over the world. Most people get an EBV infection at some point in their lives, but only some of them will get the symptoms of mono. EBV infections often happen during childhood or when someone is a young adult. EBV infections in children usually do not cause symptoms. And when they do, it's hard to tell the difference between the symptoms of mono and the symptoms of other common childhood illnesses such as the flu. Teens and young adults who get EBV are more likely to have symptoms that are typical of mono.

EBV and the other viruses that cause mono are usually spread through body fluids, especially saliva (spit). This means that you can get it through kissing. That's why mono is sometimes called "the kissing disease." But you can also get these viruses if you share food, drinks, forks, spoons, or lip balm with someone who has mono. Other less common ways of getting an infection are through blood transfusions, organ transplants, and blood and semen during sexual contact.

The symptoms of mono usually start four to six weeks after you get the infection. But they may start sooner in young children. The symptoms often develop slowly, and they may not all happen at the same time. They can include:

• Extreme fatigue
• Fever
• Sore throat
• Head and body aches
• Swollen lymph glands in your neck and armpits
• Rash
• Swollen liver, spleen, or both (these are less common symptoms)

Most people get better in two to four weeks. However, some people may feel fatigued for several more weeks. Occasionally, the symptoms can last for six months or longer.

Your healthcare provider may diagnose mono based on your symptoms and a physical exam. The exam will include checking to see if your lymph nodes, tonsils, liver, or spleen are swollen. In some cases, your provider might also order a mono test to confirm the diagnosis.

• Drinking plenty of fluids to avoid dehydration.
• Getting lots of rest.
• Taking over-the-counter medications for pain and fever. But don't give aspirin to children or teens because it may cause Reye syndrome. This syndrome is a rare, serious illness that can affect the brain and liver.

If you have severe symptoms, your provider may suggest additional treatment based on which organs in your body are affected by the mono.

Antibiotics don't treat viral infections, so they do not help with mono. Some people do get bacterial infections such as strep throat along with mono. In that case, you probably need antibiotics to treat the bacterial infection. But you should not take penicillin antibiotics like ampicillin or amoxicillin. Those antibiotics can cause a rash in people who have mono.

Mono can cause an enlarged spleen, which could rupture and cause a medical emergency. To try to protect the spleen, providers recommend avoiding intense exercise and contact sports until you fully recover (about a month).

There is no vaccine to protect against mono. To lower your chance of getting or spreading mono:

• Don't share food, drinks, forks, spoons, or lip balm with anyone, especially if you or the other person has mono.
• Don't kiss someone if you or the other person has mono.
• Wash your hands often with soap and water.

Centers for Disease Control and Prevention

A kidney transplant is an operation that places a healthy kidney in your body. The transplanted kidney takes over the work of the two kidneys that failed, so you no longer need dialysis.

During a transplant, the surgeon places the new kidney in your lower abdomen and connects the artery and vein of the new kidney to your artery and vein. Often, the new kidney will start making urine as soon as your blood starts flowing through it. But sometimes it takes a few weeks to start working.

Many transplanted kidneys come from donors who have died. Some come from a living family member. The wait for a new kidney can be long.

If you have a transplant, you must take drugs for the rest of your life, to keep your body from rejecting the new kidney.

NIH: National Institute of Diabetes and Digestive and Kidney Diseases

Legionnaires' disease is a serious type of pneumonia caused by Legionella bacteria. The disease got its name when a group of people at an American Legion convention became ill with this type of pneumonia.

Legionella is found naturally in freshwater, such as lakes and rivers. It can also be found in soil. But people usually only get sick from it when if it grows and spreads in man-made water systems. These systems can include hot tubs, fountains, and the plumbing systems of large buildings, such as hotels or nursing homes.

Legionella can also cause Pontiac fever. This is a milder, flu-like illness that doesn't infect your lungs.

You usually can't get infected by drinking water that contains the bacteria unless you aspirate it (accidentally breathe the water into your lungs). The bacteria don't spread from person to person. Disease outbreaks happen when many people are exposed to the same water source that contains the bacteria.

Most healthy people who come in contact with the bacteria do not become sick. You are more likely to develop an infection if you:

• Are over the age of 50
• Are a current or former smoker
• Have a chronic (long-lasting) disease such as diabetes or kidney failure
• Have a chronic lung disease such as COPD or emphysema
• Have a weakened immune system due to a disease such as HIV or cancer or are taking medicines that suppress your immune system
• Live in a long-term care facility
• Have recently stayed in a hospital or had surgery requiring anesthesia

The symptoms usually show up 2 to 14 days after you were exposed to Legionella bacteria. Most of the symptoms are similar to those of other types of pneumonia. But Legionnaires' disease may also cause gastrointestinal symptoms and mental changes.

The symptoms of Legionnaires' disease may include:

• Cough
• High fever
• Chills
• Headache
• Chest pain
• Shortness of breath
• Fatigue
• Nausea and vomiting
• Diarrhea
• Confusion

Legionnaires' disease can cause life-threatening complications such as respiratory failure, kidney failure, and sepsis.

About 1 out of every 10 people who get sick with Legionnaires' disease will die from complications of the illness.

To find out if you have Legionnaires' disease, your health care provider will probably order a chest x-ray to see if you have pneumonia. If you do have it, lab tests such as a urine or sputum test can check for the Legionella bacteria. Your provider may also order a blood test to see if you have been exposed to the bacteria.

If you have Legionnaires' disease, you will likely need care in a hospital. The treatment is with antibiotics. Most people will recover, especially if they were healthy when they got the disease. Getting treatment early can increase the chances of getting better.

You can lower your risk of getting Legionnaires' disease if you:

• Clean all your water-related devices regularly. This could include portable humidifiers, water heaters, air conditioners, and nasal rinses.
• If you haven't used your faucets and showerheads for a week or more, flush them by letting the hot and cold faucets run for at least two minutes before use.
• Avoid exposure to water sources such as decorative foundations or hot tubs if you don't know how well they are maintained.
• Use windshield cleaner in your wiper fluid tank in your car instead of water.
• Ask about how well your buildings' water systems are maintained.

Centers for Disease Control and Prevention

Malaria is a serious disease caused by a parasite. You get it when an infected mosquito bites you. Malaria is a major cause of death worldwide, but it is almost wiped out in the United States. The disease is mostly a problem in developing countries with warm climates. If you travel to these countries, you are at risk. There are four different types of malaria caused by four related parasites. The most deadly type occurs in Africa south of the Sahara Desert.

Malaria symptoms include chills, flu-like symptoms, fever, vomiting, diarrhea, and jaundice. A blood test can diagnose it. It can be life-threatening. However, you can treat malaria with drugs. The type of drug depends on which kind of malaria you have and where you were infected.

Malaria can be prevented. When traveling to areas where malaria is found:

• See your doctor for medicines that protect you
• Wear insect repellent with DEET
• Cover up
• Sleep under mosquito netting

Centers for Disease Control and Prevention

Children aren't just small adults. It is especially important to remember this when giving medicines to children. Giving a child the wrong dose or a medicine that is not for children can have serious side effects.

The drug labels for prescription medicines have a section on "Pediatric Use." It says whether the medicine has been studied for its effects on children. It also tells you which age groups were studied. Some over-the-counter (OTC) medicines, like those that treat fever and pain, have been studied for effectiveness, safety, or dosing in children. But many other OTC medicines have not. It is important to read the labels carefully, to make sure that the medicine is right for your child.

Here are some other tips for giving medicine safely to your child:

• Read and follow the label directions every time. Pay special attention to usage directions and warnings.
• Watch out for problems. Contact your health care provider or pharmacist right away if
• You notice any new symptoms or unexpected side effects in your child
• The medicine doesn't appear to be working when you expect it to. For example, antibiotics may take a few days to start working, but a pain reliever usually starts working soon after your child takes it.
• Know the abbreviations for the amounts of medicines:
• Tablespoon (tbsp.)
• Teaspoon (tsp.)
• Milligram (mg.)
• Milliliter (mL.)
• Ounce (oz.)
• Use the correct dosing device. If the label says two teaspoons and you're using a dosing cup with ounces only, don't try to guess how many teaspoons it would be. Get the proper measuring device. Don't substitute another item, such as a kitchen spoon.
• Check with your health care provider or pharmacist before giving two medicines at the same time. That way, you can avoid a possible overdose or an unwanted interaction.
• Follow age and weight limit recommendations. If the label says don't give to children under a certain age or weight, then don't do it.
• Always use the child-resistant cap and re-lock the cap after each use. Also, keep all medicines out of the reach of children.
• Ask your health care provider or pharmacist if you have any questions.

Food and Drug Administration