Bacterial and viral acute sinus infections typically display similar symptoms. The duration of the infection can help determine if it is viral or bacterial. Many viruses, such as the ones that cause ...

It can be hard to tell the difference between viral and bacterial tonsillitis from symptoms alone. However, tonsillitis caused by a viral infection may be milder than tonsillitis caused by a bacterial ...

Pseudomonas bacteria infected by different mutations of a jumbo phage. The dot in the middle is the shield created by the phage to protect its DNA after it has infected the bacterial cell. Image by ...