The common cold and flu are caused by a virus. Symptoms include a fever, headache, body aches, and sore throat.
Ear infections (otitis media, otitis externa), tonsillitis, bronchitis, sinusitis can also be caused by viruses. These infections can cause pain in the ear or throat, trouble breathing, and even hearing loss. If left untreated, these infections can lead to more serious health problems.
There are many different types of infections that can cause problems for people of all ages. Some common infections include colds and flu, ear infections (otitis media, otitis externa), tonsillitis, bronchitis, sinusitis. However, not all infections are easy to treat and some can even be life-threatening.