Hydranencephaly, Schizencephaly. Print. Print. Hydranencephaly. Hydranencephaly is a rare and extreme form of porencephaly. The hemispheres of the cerebrum are absent and replaced by sacs filled with cerebrospinal fluid (CSF). In most cases, the cerebellum and brainstem are formed normally.
Strangles (also equine distemper) is a contagious upper respiratory tract infection of horses and other equines caused by a bacterium, Streptococcus equi var.equi. Strangles is enzootic in domesticated horses worldwide. The contagious nature of the infection has at times led to limitations on sporting events.trangles (also equine distemper) is a contagious upper respiratory tract infection of horses and other equines caused by a bacterium, Streptococcus equi var.
The Strangles bacteria can live for significant lengths of time on exposed surfaces. It can survive 3 days to one week on stall surfaces, soil and other places. In freezing weather it can persist indefinitely, though.Water can be a significant source of infection as the bacteria can survive in water for up to six weeks.Most stables can be safely repopulated after a Strangles outbreak, but care should always be taken to clean and disinfect the water sources prior to introducing horses again.o prevent Strangles outbreaks, horses newly arriving to a barn should be isolated for a period of 2 to 3 weeks. Horses that have shown no symptoms after 3 weeks are at low risk of spreading disease, although there are occasional horses that have no signs but may still spread the disease.