Some species and genotypes of Cryptosporidium and Giardia are important zooneses, as they occur in both animals and man. Zooneses are diseases that may be transmitted between animals and people.
Inger Sofie Hamnes showed in her doctorate that parasites of the groups Cryptosporidium and Giardia are extremely widespread in domestic animals, wild deer species and the red fox in Norway. Genotyping of Giardia isolated from elk, wild reindeer and red foxes showed that Giardia duodenalis in these animals may potentially infect humans.
Hamnes studied the occurrence of Cryptosporidium and Giardia in calves, dogs, wild deer species (elk, wild reindeer, red deer, roe deer and Svalbard reindeer), piglets and red fox in Norway, by analysis of scats.
Her studies showed that Cryptosporidium is common among young dogs, calves and piglets and that the parasites also occur to a lesser extent in roe deer, elk, red deer and the red fox. Cryptosporidium was not found in wild reindeer or Svalbard reindeer.
Giardia was more common than Cryptosporidium in calves, and the occurrence of both parasites varied with the calves' age, geographic occurrence, season, and the cleaning frequency of pens. Among wild deer species, Giardia was more common than Cryptosporidium, while roe deer and elk had the highest occurrences of both parasites.
The presence of Cryptosporidium and Giardia in dogs varied with age and geographic location. There was a higher occurrence of diarrhoea in piglets from litters that were infected by Cryptosporidium than in litters free of infection. The occurrence of both parasites was low in the red fox, however, the geographic distribution was extensive.
The results of these studies show that parasites of the groups Cryptosporidium and Giardia are widely distributed among both domestic and wild animals in Norway. Grazing animals may represent a source of transmission to man through drinking water, although people can also become infected through direct contact with infected animals.
Magnhild Jenssen | alfa
Water forms 'spine of hydration' around DNA, group finds
26.05.2017 | Cornell University
How herpesviruses win the footrace against the immune system
26.05.2017 | Helmholtz-Zentrum für Infektionsforschung
Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.
Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....
Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.
The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....
An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.
We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...
Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.
Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...
An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...
24.05.2017 | Event News
23.05.2017 | Event News
22.05.2017 | Event News
26.05.2017 | Life Sciences
26.05.2017 | Life Sciences
26.05.2017 | Physics and Astronomy