What viral illness causes 103 temp already been checked for the flu and strep throat. has bad dry cough stomach ache. what is this?

There are a few possible viral illnesses that could cause these symptoms, including:

* COVID-19: This is a respiratory illness that is caused by the SARS-CoV-2 virus. Symptoms of COVID-19 can include fever, cough, shortness of breath, fatigue, body aches, headache, sore throat, loss of taste or smell, and diarrhea.

* Influenza (the flu): This is a respiratory illness that is caused by the influenza virus. Symptoms of the flu can include fever, cough, sore throat, runny or stuffy nose, muscle aches, fatigue, and headache.

* Parainfluenza: This is a respiratory illness that is caused by the parainfluenza virus. Symptoms of parainfluenza can include fever, cough, sore throat, runny or stuffy nose, hoarseness, and wheezing.

* Respiratory syncytial virus (RSV): This is a respiratory illness that is caused by the RSV virus. Symptoms of RSV can include fever, cough, sore throat, runny or stuffy nose, and wheezing.

* Adenovirus: This is a respiratory illness that is caused by the adenovirus. Symptoms of adenovirus can include fever, cough, sore throat, runny or stuffy nose, and swollen lymph nodes.

It is important to see a doctor if you are experiencing these symptoms so that they can determine the cause and recommend the best treatment.