Infectious diseases Archive

Shingles is a painful condition caused by the varicella-zoster virus. People typically encounter this virus, which causes chickenpox, in childhood. The virus stays dormant in the body, sometimes for decades, and may re-emerge as shingles. The best way to prevent shingles is by getting vaccinated. People should get the vaccine even if they've had shingles in the past, because it is possible to get shingles more than once. Maintaining healthy habits, such as eating right, getting enough sleep, and managing stress, may also help to prevent shingles by keeping the immune system working well.

It's common to have a cough for weeks after an upper respiratory infection. When a cough lasts six weeks or longer, doctors may order a chest x-ray to check for an underlying lung problem. Chronic coughing also can result from medications, postnasal drip, acid reflux, or asthma.

Men are less likely than women to get regular exams and tests, especially when they are younger. But as they age, routine screenings are essential. There are certain tests most men should have at some point, including ones for colon cancer, high blood pressure, hepatitis C, diabetes, and HIV. Other tests men should consider if they are at high risk for specific ailments, such as abdominal aortic aneurysm, hepatitis B, and lung cancer.

A recent analysis found evidence mixed on whether zinc can help prevent or treat a cold. However, there appears to be no significant harm from taking over-the-counter zinc products in safe amounts per the label's instructions.

Walking pneumonia means a person with pneumonia is highly likely to get well at home and not develop complications. Still, walking pneumonia is considered a significant infection and requires prompt and appropriate treatment. Doctors usually prescribe antibiotics and rest.

Rapid COVID tests aren't foolproof, but can provide an added layer of assurance if people take them before a planned gathering, in addition to following other preventive strategies.

If you are gathering with family or friends during this holiday season there is still a lot of uncertainty around how to help keep everyone as safe as possible from COVID-19 illnesses and hospitalizations, particularly when many people will be traveling. Harvard Health Publishing faculty contributors share their own holiday plans and offer advice for safely enjoying the holidays this year.