Viral Fever Duration – How Long Does It Last?

Viral fever is not a condition in itself but it is the symptom of a viral infection. There are thousands of viruses that can infect humans so the symptoms of viral fever will depend on the type of virus. Unlike antibiotic medications that kill bacteria, there are no drugs that can destroy viruses. Most of the drugs used to treat a viral fever can only control the severity and duration of the viral fever, which is why home remedies for viral fever are so popular.

Most often, viral fever duration is 1-5 days, but serious viral infections can cause persistent fever

How Long Does A Viral Fever Last?

The duration of a viral fever depends on several factors including your age, health status, your immunity levels, and the type of viral infection. For instance, rhinoviruses cause the common cold and typically your fever would last for 1-2 days. Influenza viruses cause the flu and your fever would subside in 2-3 days.


Adenoviruses infects the airways and the intestinal tract and while it may take a week or more to recover completely, your fever would last for just 3-5 days.

The rotaviruses cause gastroenteritis which causes a mild to moderate fever that disappears within a day or two.

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The coxsackie viruses cause hand -foot-and-mouth disease which begins with a low fever that lasts for 2-3 days.

While it is safe to say that most common viral fevers last for 1-5 days, there are more serious viral infections that can cause persistent high fever. If your fever is unusually high or if you are unable to bring it under control, you should consult your doctor to get a definite diagnosis.

Does Age Affect The Viral Fever Duration?

Viral fever in kids can last for 4-6 days, about twice as long as it lasts in adults

The duration of viral fever in adults varies largely from the duration of viral fever in toddlers. Babies are not as adaptable as adults when it comes to temperature regulation which is why it can be tougher to bring viral fever in babies under control.

Similarly, a child’s immune system is not as strong as an adult which means that they are more susceptible to infections. The duration of viral fever in kids can be 2-3 days longer as compared to adults.

It is important to keep in mind that your temperature does not indicate the severity of the infection. In some cases a minor infection may cause a high viral fever while a more serious infection could cause milder fevers. While it is dangerous to leave high viral fevers untreated, you should not ignore a mild fever if it persists. Make sure that you eat healthy and get adequate sleep to bolster your immunity levels and recover quickly.

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