Results 11 to 20 of about 498,552 (358)

Greater Phage Genotypic Diversity Constrains Arms-Race Coevolution

open access: yesFrontiers in Cellular and Infection Microbiology, 2022
Antagonistic coevolution between hosts and parasites, the reciprocal evolution of host resistance and parasite infectivity, has important implications in ecology and evolution.
Meaghan Castledine   +6 more
doaj   +1 more source

Tuberculosis Transmission in a Primary School and a Private Language School. An Estimation of Infectivity

open access: yesFrontiers in Pediatrics, 2020
Introduction: Belgium is a country with low incidence of tuberculosis (TB) and a very low number of TB cases in children. Children in contact with an adult smear-positive TB case are at high risk of transmission.
Sara Debulpaep   +14 more
doaj   +1 more source

High titers of transmissible spongiform encephalopathy infectivity associated with extremely low levels of PrP in vivo [PDF]

open access: yes, 2007
Rona Barron - ORCID: 0000-0003-4512-9177 https://orcid.org/0000-0003-4512-9177Diagnosis of transmissible spongiform encephalopathy (TSE) disease in humans and ruminants relies on the detection in post-mortem brain tissue of the protease-resistant form of
Barron, R. M.   +6 more
core   +1 more source

Anopheles gambiae and Anopheles arabiensis population densities and infectivity in Kopere village, Western Kenya

open access: yesJournal of Infection in Developing Countries, 2012
Introduction: This study was conducted in a sugar belt region of western Kenya interfacing epidemic and endemic malaria transmission. We investigated Anopheles gambiae sensu stricto (ss) and Anopheles arabiensis species compositions and densities, human
Andrew Ambogo Obala   +7 more
doaj   +1 more source

Predicting the size and probability of epidemics in a population with heterogeneous infectiousness and susceptibility [PDF]

open access: yes, 2007
We analytically address disease outbreaks in large, random networks with heterogeneous infectivity and susceptibility. The transmissibility $T_{uv}$ (the probability that infection of $u$ causes infection of $v$) depends on the infectivity of $u$ and the
G. Chowell   +7 more
core   +1 more source

A Gallus gallus Model for Determining Infectivity of Zoonotic Campylobacter

open access: yesFrontiers in Microbiology, 2019
To better understand public health implications of waterfowl as reservoirs for zoonotic sources of Campylobacter in recreational waters, we developed a Gallus gallus (chick) model of infection to assess the pathogenicity of environmental isolates of ...
Dennis Lye   +5 more
doaj   +1 more source

Environmental Stability and Infectivity of Hepatitis C Virus (HCV) in Different Human Body Fluids

open access: yesFrontiers in Microbiology, 2018
Background: Hepatitis C virus (HCV) is a hepatotropic, blood-borne virus, but in up to one-third of infections of the transmission route remained unidentified.
Stephanie Pfaender   +16 more
doaj   +1 more source

Interactions between free-living amoebae and Cryptosporidium parvum: an experimental study

open access: yesParasite, 2023
Free-Living Amebae (FLA) and Cryptosporidium oocysts occasionally share the same environment. From 2004 to 2016, Cryptosporidium was responsible for 60% of 905 worldwide waterborne outbreaks caused by protozoan parasites.
Lefebvre Marion   +8 more
doaj   +1 more source

Interactions between vaccinia virus and sensitized macrophages in vitro [PDF]

open access: yes, 1975
The action of peritoneal exudate cells (PEC) from normal and vaccinia virus infected mice on infectious vaccinia virus particles was investigatedin vitro. PEC from immune mice showed a significantly higher infectivity titre reduction (virus clearance, VC)
A. V. Boand   +25 more
core   +1 more source

Infectivity, persistence and serological response of nine Trichinella genotypes in rats

open access: yesParasite, 2001
Domestic and sylvatic Trichinella genotypes were evaluated for infectivity, muscle larvae persistence, and host antibody responses in rats. Groups of rats were inoculated with T. spiralis, T. nativa, T. britovi, three genotypes of T. pseudospiralis (from
Malakauskas A., Kapel C.M.O., Webster P.
doaj   +1 more source

Home - About - Disclaimer - Privacy