Andreas Hoch

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Cystic meningiomas are uncommon tumors that are easily confused with metastatic or glial tumors with cystic components. We report on our experience of intraoperative findings and management of peritumoral cyst wall and cyst fluid in cystic meningiomas. We reviewed all the meningiomas operated on at our department in a 3 1/2-year period (January 1998 to June(More)
Results in entomological and vertebrate host investigations made during dual outbreaks of Mayaro (MAY) and yellow fever (YF) viruses in Belterra, Pará, Brazil in 1978 are reported. Over 9,000 insects representing 26 species were assayed in 396 pools for the presence of arboviruses. Pools of Haemagogus janthinomys Dyar yielded the only isolates of either MAY(More)
An initial evaluation of insecticide barrier spraying directed against sand fly vectors of cutaneous leishmaniasis was done in a nonclimax forested area with heavy undergrowth in Peten, Guatemala. A 100 m-wide swath of vegetation was sprayed once with a 1:3 mixture of cyfluthrin insecticide and a palm oil carrier using back-pack sprayers to simulate a(More)
The ecology of Culicoides paraensis was studied with human bait collections at an agricultural research station near Belém and within 2 neighborhoods of Belém, Brazil, from 1977 to 1978. From collections conducted along transects that were centered on a house, we found most dense populations of host-seeking midges within and near the house. Host-seeking(More)
Urban epidemics of Oropouche (ORO) fever in three municipalities in Pará, Brazil were studied in 1975. Culicoides paraensis (Goeldi) were collected during each of the epidemics and there was a positive correlation, by study areas within the city of Santarém, between human seropositivity to ORO virus and population densities of C. paraensis and Culex(More)
for the 6. International Precision Assembly Seminar IPAS 2012 in Chamonix, France, from February 12 – 15, 2012 1. Title: Construction kit for miniaturised handling systems: Further developments and first applications 2. Suggested topic area (from topic list)  Design of assembly systems  Robotics and robot applications for precision assembly  Modular(More)
Experimental studies were conducted to determine if hematophagous Diptera were capable of mechanical transmission of Rift Valley fever (RVF) virus to laboratory animals. All species tested (Glossina morsitans, Aedes aegypti, Aedes taeniorhynchus, Culex pipiens, Stomoxys calcitrans, Lutzomyia longipalpis, and Culicoides variipennis) mechanically transmitted(More)
Rift Valley fever virus was shown to replicate in Lutzomyia longipalpis after intrathoracic inoculation. Viral titers peaked at approximately 4 days postinoculation [mean titer = 10(4.0) plaque forming units (PFU)] and remained relatively constant through day 7. A minimum of 6 of 326 sand flies transmitted virus by bite to susceptible hamsters after 5-9(More)
Oropouche virus (arbovirus family Bunyaviridae, Simbu serological group) was experimentally transmitted from man to hamster by the bite of the midge Culicoides paraensis. Infection rates and transmission rates were determined after the midge had engorged on patients with viremia. The threshold titer necessary to enable infection or transmission by the(More)