According to the search results, there are several illnesses going around currently. Some of the common illnesses include:

• Croup: A viral respiratory illness that most often is caused by the parainfluenza virus.

• Enteroviruses: A group of viruses that often cause illness during the summer and the early fall months. The commonly used term "enterovirus" includes the coxsackie viruses, the echoviruses, and the enteroviruses. These viruses often cause a fever, and also may cause a rash, respiratory or cold symptoms, and vomiting with diarrhea. Hand-foot-mouth disease, a rash that involves those areas of the body, is a common enteroviral infection that occurs in children.

• Influenza: Infection with the influenza virus causes a sudden onset of fever, chills, dry cough, and muscle aches. Other symptoms include headache, fatigue, sore throat, and nasal congestion. Flu cases usually start to increase around October and peak between December and February.

• Respiratory syncytial virus (RSV): It usually causes mild symptoms. In some people, especially young children, it can lead to conditions that make breathing difficult, like pneumonia. Older adults may take longer to recover from RSV.

• COVID-19: It affects the lungs and airways. Most people have mild symptoms, but some can become severely ill.

It is important to note that determining the cause of an illness can be tricky because many share some symptoms. If you are sick, it is recommended to get plenty of rest, take over-the-counter medications for your symptoms, seek medical care if they become severe, and stay home to avoid infecting anybody else.