favids

Favids are a group of viruses that infect bacteria. They are a type of bacteriophage, which are viruses that specifically target and replicate within bacteria. Favids are characterized by their specific host range, meaning they can only infect certain types of bacteria. The name "favids" is derived from the fact that they were first discovered in species of the genus *Francisella*.

These viruses possess a double-stranded DNA genome and a characteristic icosahedral head structure. They attach to the surface of their host bacterium and inject their genetic material. Once inside, the viral DNA hijacks the bacterial machinery to produce new virus particles. These new favids are then released, often by lysing the host cell, meaning they break it open.

Research into favids is ongoing, with potential applications in areas such as phage therapy. Phage therapy uses bacteriophages as an alternative to antibiotics for treating bacterial infections. Because favids are highly specific to their bacterial hosts, they offer a targeted approach that may reduce the development of antibiotic resistance. Understanding their structure, replication cycle, and host interactions is crucial for developing effective phage-based treatments. Studies also explore their role in microbial communities and their potential impact on bacterial evolution.