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Bird flu
This type of flu is most often contracted by contact with sick birds. It can also be passed from person to person.
Symptoms begin within two to eight days and can seem like the common flu. Cough, fever, sore throat, muscle aches, headache and shortness of breath may occur.
The disease can carry a high mortality in humans. Some antiviral drugs, if taken within two days of symptoms, may help.
Biopsy
A biopsy is a medical test commonly performed by a surgeon, interventional radiologist, or an interventional cardiologist. The process involves extraction of sample cells or tissues for examination to determine the presence or extent of a disease.
Bilharzia
Schistosomiasis is an acute and chronic parasitic disease caused by blood flukes (trematode worms) of the genus Schistosoma. Estimates show that at least 229 million people required preventive treatment in 2018. Preventive treatment, which should be repeated over a number of years, will reduce and prevent morbidity.
Beta blockers

Beta blockers, also known as beta-adrenergic blocking agents, are medications that reduce your blood pressure. Beta blockers work by blocking the effects of the hormone epinephrine, also known as adrenaline.

Beta blockers cause your heart to beat more slowly and with less force, which lowers blood pressure. Beta blockers also help open up your veins and arteries to improve blood flow.

Benign prostate enlargement

Benign prostatic hyperplasia (BPH) — also called prostate gland enlargement — is a common condition as men get older. An enlarged prostate gland can cause uncomfortable urinary symptoms, such as blocking the flow of urine out of the bladder. It can also cause bladder, urinary tract or kidney problems.

With this condition, the urinary stream may be weak or stop and start. In some cases, it can lead to infection, bladder stones and reduced kidney function.
Treatments include medication that relaxes the bladder or shrinks the prostate, surgery and minimally invasive surgery.