Four more people have died from the MERS virus in Saudi Arabia, bringing the death toll from the SARS-like virus in the kingdom to 32, the health ministry said Monday.
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A chronic disease is a disease or other human health condition that is persistent or long-lasting in nature. The term chronic is usually applied when the course of the disease lasts for more than three months. Common chronic diseases include asthma, cancer, diabetes and HIV/AIDS.
In medicine, the opposite of chronic is acute. A chronic course is further distinguished from a recurrent course; recurrent diseases relapse repeatedly, with periods of remission in between.
While often referred to as "non-communicable diseases", also usually lasting medical conditions, the latter are distinguished by their non-infectious cause. In contrast, some chronic diseases, such as HIV/AIDS, are caused by transmissible infections.
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Researchers have identified a new virus in patients with severe brain infections in Vietnam. Further research is needed to determine whether the virus is responsible for the symptoms of disease.
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