Plum pox virus (PPV), a destructive and economically devastating pathogen of Prunus species, was recently discovered in Pennsylvania and Canada. Current containment efforts involve eradication of infected trees based on ELISA surveys, which are laborious and less sensitive than PCR-based techniques. A real-time, fluorescent, reverse transcription-polymerase chain reaction (RT-PCR) assay was dev...

BACKGROUND Noroviruses (NoV) have become one of the most commonly reported causative agents of large outbreaks of non-bacterial acute gastroenteritis worldwide as well as sporadic gastroenteritis in the community. Currently, reverse transcriptase polymerase chain reaction (RT-PCR) assays have been implemented in NoV diagnosis, but improvements that simplify and standardize sample preparation, a...

Diarrhea can be caused by a range of pathogens, including several bacteria. Conventional diagnostic methods, such as culture, biochemical tests, and enzyme-linked immunosorbent assay (ELISA), are laborious. We developed a 7-plex PCR-Luminex assay to simultaneously screen for several of the major diarrhea-causing bacteria directly in fecal specimens, including pathogenic Aeromonas, Campylobacter...

Abstract Testing for potato viruses is globally very important to prevent a critical shortage of supply. In most countries, testing obligated by law. Germany, seed potatoes are monitored six viruses: PLRV, PVY, PVM, PVA, PVX and PVS. They can cause up 90% loss tubers in the field. Common methods currently used ELISA conventional real-time PCR, but both time-consuming, former needs high capacity...

The use of Bacillus anthracis as a biological weapon in 2001 heightened awareness of the need for validated methods for the inactivation of B. anthracis spores. This study determined the gamma irradiation dose for inactivating virulent B. anthracis spores in suspension and its effects on real-time PCR and antigen detection assays. Strains representing eight genetic groups of B. anthracis were e...

A homemade enzyme-linked immunosorbent assay (ELISA) and a dipstick assay (Dipstick) for the detection of anti-Entamoeba histolytica antibodies in serum were developed and evaluated together with a commercially available latex agglutination test (LAT; Laboratoires Fumouze) for their use in serodiagnosis of amebiasis. The sensitivity of these assays was evaluated with sera from 27 patients with ...

The performance of a sandwich enzyme-linked immunosorbent assay (ELISA) which detects Aspergillus galactomannan (GM) was evaluated in bronchoalveolar lavage (BAL) fluid samples from 19 patients who were treated for hematological malignancies and who were suspected of having invasive pulmonary aspergillosis (IPA). All patients had fever and pulmonary infiltrates on the chest roentgenogram on the...

Since there is no consensus about the most reliable assays to detect invasive aspergillosis from samples obtained by minimally invasive or noninvasive methods, we compared the efficacy of an enzyme-linked immunosorbent assay (ELISA) for galactomannan (GM) detection and quantitative real-time PCR assay (qRT-PCR) for the diagnosis of invasive pulmonary aspergillosis. Neutropenic, male Sprague-Daw...

objective: toxoplasmosis may cause significant damage to the developing fetus and is a life-threatening opportunistic infection in immunocompromised persons. molecular methods are known to be more sensitive and more specific than serological assays for diagnosis of toxoplasmosis. application of quantitative pcr has evolved sensitive, specific, and rapid method for the detection of rh strain of ...

1320 blood samples were collected from herds showing clinical signs of pestiviral infections. 39 samples were positive in Ag-ELISA assay. All these 39 samples in addition to 5 cytopathic strains were cultured in MD-BK cell line and presence of pestiviral antigens was confirmed by direct-immunofluorescent test. 27 out of 44 BVDV suspected isolates were detected by RT-PCR using a primer set. Diff...