We currently lack a safe, effective and licensed vaccine for pneumonic plague, which is nearly always fatal and has been weaponized. Yersinia pestis overcomes host defense, in a large part ...

COPD is a progressive lung disease with mild symptoms in the early stages that gradually worsen. Early diagnosis and treatment can help preserve lung function. People with COPD often have trouble ...

In some stages, bubonic plague may attack the lungs and become pneumonic plague, a disease which can spread like wildfire from person to person. Health agencies in states where the plague has ...

It consists of episodes during which the symptoms last for at least two weeks. Depression can last for several weeks, months, or years. For many people, it is a chronic illness that gets better ...

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Pneumonia symptoms can vary based on the cause and severity of the lung infection. For some, it might feel similar to the flu or be barely noticeable. For others, pneumonia can cause severe ...

While we know the hallmark symptoms of COVID ― like coughing, fatigue, for example ― there are some COVID-19 symptoms that aren’t normal and shouldn’t be treated as such. “What’s really important is ...

Here's what to know about flu symptoms in 2025, how to tell if it's something else, and how to protect yourself: But there are some differences. COVID-19 can show up later than the cold or flu ...