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.
Nasal swabs can ascertain whether the horse is shedding the streptococcus equi bacteria, but because affected horses shed the bacteria sporadically, one swab test is not enough. Three nasal swabs over a period of seven days are required before it can be assumed that the horse is negative for strangles. Strangles can also be controlled by vaccinations.