Related Clues:

• Ready to circle river 26 down
• Submicroscopic organism, cause of disease
• Disease
• Cause of disease
• Infectious particle
• Particle injurious to people (or computers?)
• Pink, slimy subterranean wriggler
• Insect - virus
• Bodily or computer infection
• Cause of infection (in people and computers)
• Microscopic entity capable of reproducing within cells
• Long slender invertebrate
• Pathogen — computing menace
• Transmitted cause of infection
• Slimy invertebrate with a long thin body