Fibril Shape Is The Basis Of Prion Strains And Cross-species Prion Infection
... or "mad cow" disease. Since then, barriers to the transmission of prion diseases between species "have emerged as...uences of the prions. Under this scenario, disease transmission would be more likely between species with similar prion amino acid sequences. But a few mysteries s...Reducing malarial transmission in Africa
...ly slow the development of resistance and minimize transmission of resistant parasites. In this month's premier o...rst-line treatment is not likely to reduce overall transmission of Plasmodium falciparum within the community it might reduce selective transmission of resistant pa...A new study examines how shared pathogens affect host populations
...commonly transmitted across species. Cross-species transmission is often associated with pathogen emergence and th...sts are commonly transmitted by vectors, and their transmission rate is often thought to depend on the proportion of hosts or vectors infected (i.e. frequency depen...Falling ants glide back to trunk to avoid dangers of forest floor
... to explore how deforestation affects the mosquito transmission of Venezuelan equine encephalitis. In hopes of establishing a mosquito colony in the laboratory, he goes in search of mosquitoes and larvae in the canopy where they live, mostly above private land around the city. Using ropes and cave-climbing equipm...New studies suggest airborne SARS transmission is possible
...heir results do not document any cases of airborne transmission of the SARS virus from one person to another, only...could explain the ongoing risk of SARS coronavirus transmission to health care workers. To answer this question, they collected patient information and environmenta...NIAID Initiates Trial of Experimental Avian Flu Vaccine
... been a small number of cases where human-to-human transmission of the virus may have occurred. However, public health experts fear that the virus may evolve into one that is more easily transmitted between people. If this were to happen, a worldwide pandemic could follow. Influenza pandemics are global outbreak...NYC's First Rapid HIV Drug-resistant AIDS Case Prompts Call to Step Up HIV Prevention
...osely together to monitor -- and hopefully prevent transmission of -- this strain of the virus by encouraging gay men, in particular, to practice safer sex and use condoms during all sexual encounters." "This case in New York underscores the crucial need to step up collaborative efforts among public health offic...Scientists reveal molecular secrets of the malaria parasite
...e targets for vaccines thataim to prevent parasite transmission in the mosquito."The study highlights the genes in four malarial species that evolverapidly because of "selective pressures" in the stages of their lifecycles in their mosquito vectors and in their mammalian hosts. Malariaparasites undergo three stag...Male circumcision reduces risk of HIV transmission from women to men
...onogamous couples foundthat the probability of HIV transmission per-act of sexual intercoursewas on the order of one in 1000 or less, much lower than theprobability of one in 160 found in this study. Taken with the authors'evidence that female-to-male infection rates may be more than two-foldgreater for uncircumc...