Articles tagged with Infectious Disease Transmission
A severe begomovirus-satellite DNA disease complex has been detected in okra fields in the lower Rio Grande Valley area of Texas, posing a significant threat to cotton production. The complex involves the exotic cotton leaf curl Gezira virus and its associated satellite DNA molecules.
A team of researchers used computational fluid dynamics to simulate the 3D spatial transmission of COVID-19 within a hospital isolation room. They found that the area above a patient's bed at a height of 0.7 to 2 meters is the highest risk zone for infection.
A real-time visual sensing system developed by researchers at Incheon National University can detect overcrowding with an accuracy of 96.55% in real-time. The system uses drones to capture footage, analyze it using a modified ResNet architecture, and feed the data into a social monitoring system.
A Rutgers researcher has analyzed data from Mexico's Ministry of Health to identify dengue fever hotspots, highlighting areas where severe outbreaks occur. The study found that lower socioeconomic status increases risk of dengue fever and that DENV-2 is the deadliest serotype.
Researchers at Rice University have developed light-activated nanoscale drills that can kill pathogenic fungi, providing a potential new treatment option for fungal infections. The molecular machines target the mitochondria of fungal cells, disrupting cellular metabolism and leading to cell death.
A genomic study of the Seattle 2017-2022 Shigella outbreak revealed its origin as international travelers from areas where Shigella was common. The study also found that multi-drug resistant Shigella has become a growing global health concern, primarily affecting men who have sex with men and those experiencing homelessness.
Researchers identified 7 key symptoms of long COVID, including heart issues and joint pain, in a study of 52,461 patients. The findings could help healthcare providers diagnose and treat the condition more effectively.
A cohort study of over 600 persons with non-MRI-conditional implantable cardioverter defibrillators found that these devices continue to appropriately treat detected tachyarrhythmias after MRI scans. The findings suggest that patients with non-MRI-conditional ICDs can safely undergo MRI exams without compromising device function.
A new study finds COVID-19 was the top underlying cause of death from infectious disease among children and young people aged 0–19 years. The risk of death from COVID-19 was substantially lower compared to other age groups, but still a significant concern, with over 1,300 child deaths attributed to the virus in the US.
Researchers successfully treated a young man with recurrent non-gonococcal urethritis caused by Mycoplasma genitalium using chloramphenicol. The patient showed improvement after 14 days of treatment, despite initial failure with first and second-line antibiotics.
Researchers found that measles virus mutations in its fusion protein allow it to infect nerve cells, leading to subacute sclerosing panencephalitis. The team's discovery sheds light on the evolutionary mechanisms of viruses like coronaviruses and herpesviruses.
Researchers used CO2 sensors to assess airborne transmission risk in over 60 areas in a residential aged-care home. They found that staff areas were at high risk of transmission, but implementing ventilation measures reduced this risk.
A systematic review found that livestock production is associated with improved height-for-age Z scores and weight-for-length/height Z scores in under-five children. However, it also increases the risk of disease transmission through water, food, and insects.
Researchers found that high levels of mucosal IgA antibodies in the airways protect against SARS-CoV-2 infection for at least eight months, with a 90% lower risk of re-infection. Participants with prior infections generated stronger mucosal immune responses to Omicron breakthrough infections.
A recent study by University of Missouri researcher Jake Haselswerdt suggests that partisan beliefs do not overshadow how people perceive the severity of COVID-19 in their communities. Local public health information appears to get through to individuals, regardless of their political leanings.
Researchers discovered host proteins APOBEC3 can aid HIV's latency, a major hurdle to cure research. The finding raises questions about the role of these proteins and potential ways to block their activity to inhibit viral persistence.
A recent study found that medical professionals in Illinois were relatively knowledgeable about diagnosis and treatment of Lyme disease, but lacked information on other tick-borne diseases. The researchers are now designing a continuing education course to educate practitioners on current ranges of ticks and risk of disease.
A recent study found a significant decrease in influenza activity in China during the 2020-2022 COVID-19 pandemic, particularly in winter and spring. The observed reduction in influenza seasonality may be attributed to everyday COVID-19 public health interventions.
A study in California prisons found that recent vaccination and boosters significantly reduced infectiousness of COVID-19, with a 11% decrease per additional dose. Prior infection also provided protection, with a 23% risk of transmission compared to 33% for those who had never been infected.
A study found that children exhale fewer small particles, which are less likely to spread diseases like COVID-19. Larger particles produced by adults and children can transmit infections equally well, highlighting the importance of wearing high-efficiency masks for disease prevention.
A study found that acidification of aerosols post-exhalation significantly impacts viral load. Influenza A viruses are inactivated within minutes, while SARS-CoV-2 requires days at typical indoor pH levels.
A new study published in The Journal of Rural Health found that urban men who have sex with men (MSM) are more likely to get vaccinated and tested for Mpox than their rural counterparts. The study also revealed that rural MSM perceived themselves as less susceptible to the disease and had lower intention to be vaccinated.
A North Carolina State University study found that mosquitoes harbor diverse bacterial communities, including those associated with human diseases. The research revealed greater bacterial diversity internally than externally, suggesting that mosquitoes may transfer pathogenic bacteria through physical contact or defecation.
A new study examined the impact of Medicaid funding cessation on neonatal circumcision rates in California. The research found a significant decrease in circumcision rates, particularly among low-income families, which can exacerbate existing health disparities such as lower rates of sexually transmitted infections. The findings highli...
A new study by Boston University School of Public Health found that nearly 90% of deceased individuals at a Zambian morgue were infected with COVID-19, contradicting previous assertions that the virus spared Africa. The study suggests that the reported death toll in Africa is substantially higher than official records indicate.
A new study suggests that expanding Medicaid coverage in Houston, combined with increased use of PrEP and antiviral medications, could lead to a significant decline in new HIV infections among young Black gay, bisexual, and other men who have sex with men. The model projects a potential decrease in HIV incidence rate to almost 50% with...
A global study reveals that antimicrobial resistance genes in bacteria are driven by various factors, including geographic regions and hosts. The research identifies key genes conferring resistance to critically important drugs, shedding light on the mechanisms of transmission and the need for collaborative interventions.
New research reveals that bat virus relatives of MERS-CoV efficiently bind to bat ACE2 receptors as an entry point into cells. However, these viruses only weakly bind to human ACE2 cell receptors and are not known to cause disease outbreaks in people.
A large cohort study in Tanzania found that antiviral treatment can reduce the risk of HIV transmission from mother to child by 99.5%. The study suggests that achieving the World Health Organization's goal of eliminating mother-to-child transmission is possible with modern antiviral drugs.
The study of 12,600 adults in Hong Kong found that viral rebound was not associated with increased risk of mortality. Novel oral antivirals like molnupiravir and nirmatrelvir-ritonavir may be effective treatments for more patients with COVID-19 in the early phase of the infection.
Researchers used computer simulations to show that SARS-CoV-2 variants can attach to host cells in both bats and humans using their spike proteins. The study's findings suggest a significant risk of mammalian cross-species infectivity, contradicting initial expectations of reduced transmission.
A research team at Tohoku University developed a batteryless device that can detect COVID-19 particles in the air using magnetostrictive composite plates. The device operates without batteries and transmits signals wirelessly, making it suitable for integration with IoT technologies.
A new study maps the global landscape of antimicrobial resistance, revealing surprising transmissions in Sub-Saharan Africa and highlighting the need for tailored strategies to combat resistance. The research, which analyzed sewage samples from 243 cities in 101 countries, found that resistance genes are more frequently transmitted acr...
A systematic review of national clinical practice guidelines in Europe found that fewer than half include HIV testing recommendations for patients with medical conditions indicating HIV infection. This omission hinders efforts to stop the spread of HIV through timely diagnosis, affecting the lives of people living with HIV.
A study conducted in Brazil reveals that only 75.8% of under-fifteen children in São Paulo have antibodies against measles, falling short of the ideal 94% target to prevent outbreaks. The finding is a warning sign that Brazilian children are not achieving herd immunity, making them susceptible to infection.
A global Phase 2/3 clinical trial found that vaccination with SCB-2019 reduced the risk of transmitting SARS-CoV-2 infection to household members. The study showed a significant reduction in symptomatic cases among vaccinated household contacts and indicated that vaccines can play an important role in controlling future outbreaks.
Researchers develop a new method to track disease-carrying mosquitoes by ingesting harmless DNA particles, providing unique fingerprints of information. This innovative approach has the potential to revolutionize mosquito-borne disease surveillance and tracking, offering insights into mosquito movement and hotspots.
A new study found that a single dose of acoziborole is as effective as current treatments for sleeping sickness, with a cure rate of 95% for late-stage patients and 100% for early/intermediate-stage patients. The treatment could revolutionize treatment for the disease by eliminating barriers such as hospitalization and travel distances.
A mass testing pilot in Liverpool found a 25% reduction in COVID-19 related hospital admissions, preventing 6,829 infections and 239 hospital admissions. The study suggests large-scale voluntary community testing can reduce virus transmission and prevent hospital admissions.
A systematic review of 36 studies found that influenza vaccination reduced the risk of SARS-CoV-2 infection by 20% and poor outcomes like ICU admission and death by 17-31%. The findings suggest that routine influenza vaccination could offer non-specific immunity against COVID-19 symptoms.
A new model examines the interplay between epidemic spreading and information diffusion to understand how reliable info can be better disseminated during epidemics. Effective prevention practices and mass media can increase the epidemic threshold, making it harder for infections to spread.
Two WHO-recommended hand disinfectants have been shown to effectively inactivate the monkeypox virus, with ethanol and isopropanol concentrations of 40-60% being particularly effective. The critical factor in determining their efficacy is the concentration of these ingredients.
A recent study found that superbugs in the environment rarely transmit to humans, contrary to previous fears. The researchers discovered high levels of antimicrobial-resistant bacteria in livestock, pets, and environmental samples, but surprisingly little overlap between hospital and environmental strains.
Researchers at UC Santa Barbara discovered that the ecology of small mammals upon which ticks feed can explain rates of human Lyme disease in California. The study found a clear link between infected ticks and their frequent hosts, such as dusky-footed woodrats, with diverse species playing a role in transmission.
Researchers have detected five emerging tick-borne pathogens in Central Canada, including those causing Lyme disease and babesiosis. Climate change and habitat fragmentation contribute to the spread of these pathogens, highlighting the need for increased awareness and protection measures.
A global case series of monkeypox infection in cisgender and transgender women and non-binary individuals provides valuable insights into risk factors, routes of transmission, and clinical features. The study highlights the need for education among healthcare professionals to accurately diagnose and prevent transmission.
The number of Candida auris cases in the EU/EEA nearly doubled between 2020 and 2021, with 11% of cases having no available information on carriage or infection. Early detection is crucial to prevent the spread of this healthcare-associated pathogen.
Researchers found that habitat loss and climate-induced food shortages drive pathogen spillover, but preserving and restoring natural habitats can prevent these events. By analyzing data from Australia, the study predicts when viruses like Hendra and Nipah will spill over from bats to humans.
Global immunization efforts have made polio a rare disease, but healthcare workers still need to be vigilant for acute flaccid paralysis. Dr. Marina Salvadori emphasizes the importance of alerting healthcare workers to this diagnosis as elimination is within reach.
A three-year study in Mozambique shows that parasite density and detectability in primigravid women decline as disease transmission decreases, despite stable antibody levels. This suggests non-immunological factors control infections in pregnant women.
A new study by MIT researchers finds that maintaining an indoor relative humidity between 40 and 60 percent is associated with relatively lower rates of COVID-19 infections and deaths. Indoor conditions outside this range are linked to worse COVID-19 outcomes.
Researchers identify unique chemical signal allowing ancient TB bacteria to evade immune system and spread beyond lungs. The 'mobile factor', called EsxM, allows the bacteria to infect macrophages more easily, leading to bone infections in six people.
A new controlled-release device has been tested at UMass Amherst for its effectiveness in preventing tick bites. The device uses synthetic pyrethroids to create a spatial repellent that alters the behavior of ticks, making them less likely to climb and more likely to detach or fall off. The results show promising promise in reducing th...
Co-infection with gut parasites increases shedding of respiratory bugs like Bordetella bacterium, leading to higher probability of onward transmission. This study in rabbits has broad implications for human populations and suggests targeting treatment of helminths could be an effective way to reduce disease outbreaks.
A large contact tracing investigation found no secondary cases of monkeypox, informing estimates of exposure risk and postexposure prophylaxis recommendations. The framework's ease of application and cross-setting use has important applications for future infection prevention efforts.
Researchers found that Omicron variant requires ventilation rates up to 50 times greater than the ancestral strain, with specific rates varying depending on exposure time and presence of N95 masks. Air purifiers were ineffective in reducing transmission without masks.
A UK study found substantial monkeypox transmission before symptoms appear, with 53% of cases occurring pre-symptomatically. The study's findings have important implications for infection control globally and may affect isolation and contact tracing policies.
A team of CSU researchers has designed a model that can predict which buildings will survive a wildfire, allowing for more effective fire mitigation strategies. By analyzing community networks and incorporating graph theory, the model achieves accuracy rates of up to 86% in predicting building survival.
Researchers found that shorter flower petals reduce the transmission of a harmful pathogen, increasing larval production and bee health. Planting flowers with trimmed corollas or even distribution of nectar also supports bee well-being.
A large listeriosis outbreak in southern Spain was linked to contaminated stuffed pork, which led to a public health alert and the implementation of post-exposure prophylaxis for pregnant women. The outbreak resulted in 207 confirmed cases and five miscarriages, highlighting the risk of Listeria contamination in ready-to-eat foods.