Until recently the main source of transmission of classical scrapie, a transmissible spongiform encephalopathy (TSE) of sheep, was believed to be the placenta [ 1].
Budd observed that the later infections had all occurred downstream from the first cottage, leading him to conclude that water had been the source of transmission.
September 14, 1811 North Tawton, England January 9, 1880 Clevedon, England William Budd, (born September 14, 1811, North Tawton, Devon, England died January 9 , 1880 Clevedon), English physician who identified water as a source of transmission of typhoid fever.
Carriers of Neisseria meningitidis are a key source of transmission.
The source of transmission, however, remained unknown in 44.8% of all patients.
From the outset, Canadian officials focused on a farm worker as the likely source of transmission to the pigs, which are in a "closed" herd.
Virus cultured from this patient replicated as well in vitro as virus isolated from her partner, a patient with AIDS who was the source of transmission.
Pediatric health care workers (HCWs) are an important source of transmission, exposing very young and immunocompromised patients to an increased risk of potentially severe pertussis infections.
Unsafe burials were a major source of transmission in the 2014 outbreak.
Aid workers also report success in changing behavior in rural areas, notably discouraging people from burial rituals involving direct contact with the dead - a major source of transmission.
Thus, similar to saliva for most human and animal herpesviruses, the trunk secretions may be a source of transmission for EEHVs.
