Are viruses cell specific

Yes, viruses are typically cell-specific, meaning they can only infect certain types of cells. This specificity is determined by the presence of specific receptors on the host cell's surface that the virus can bind to. For example, the influenza virus targets respiratory epithelial cells, while HIV specifically infects immune cells like CD4+ T cells. This targeted interaction is crucial for the virus's ability to enter and replicate within the host cell.