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Mohammad Islamuddin, Garima Chouhan, Muzamil Yaqub Want, Hani A Ozbak, Hassan A Hemeg, Farhat Afrin
BACKGROUND: The therapy of visceral leishmaniasis (VL) is limited by resistance, toxicity and decreased bioavailability of the existing drugs coupled with dramatic increase in HIV-co-infection, non-availability of vaccines and down regulation of cell-mediated immunity (CMI). Thus, we envisaged combating the problem with plant-derived antileishmanial drug that could concomitantly mitigate the immune suppression of the infected hosts. Several plant-derived compounds have been found to exert leishmanicidal activity via immunomodulation...
October 2016: PLoS Neglected Tropical Diseases
Biao Tang, Yanni Xiao, Jianhong Wu
Zika virus co-circulates with dengue in tropical and sub-tropical regions. Cases of co-infection by dengue and Zika have been reported, the implication of this co-infection for an integrated intervention program for controlling both dengue and Zika must be addressed urgently. Here, we formulate a mathematical model to describe the transmission dynamics of co-infection of dengue and Zika with particular focus on the effects of Zika outbreak by vaccination against dengue among human hosts. Our analysis determines specific conditions under which vaccination against dengue can significantly increase the Zika outbreak peak, and speed up the Zika outbreak peak timing...
October 24, 2016: Scientific Reports
M Y Tan, L N Tan, M M Aw, S H Quak, S V Karthik
HBoV is an emergent virus, which is frequently detected as a co-infective agent. However, it can cause disease on its own. It is associated with respiratory and diarrhoeal illness in children and adults, whether immunocompetent or immunocompromised. We report HBoV infection in a child post-liver transplantation, who presented with persistent fever and mild tachypnea, 3 weeks after a successful transplant. She recovered spontaneously with no graft dysfunction.
October 23, 2016: Pediatric Transplantation
Marta Canuti, Kimberly E O'Leary, Bruce D Hunter, Grant Spearman, Davor Ojkic, Hugh G Whitney, Andrew S Lang
Aleutian mink disease virus (AMDV) causes plasmacytosis, an immune complex-associated syndrome that affects wild and farmed mink. The virus can also infect other small mammals (e.g., ferrets, skunks, ermines, and raccoons), but the disease in these hosts has been studied less. In 2007, a mink plasmacytosis outbreak began on the Island of Newfoundland, and the virus has been endemic in farms since then. In this study, we evaluated the molecular epidemiology of AMDV in farmed and wild animals of Newfoundland since before the beginning of the outbreak and investigated the epidemic in a global context by studying AMDV worldwide, thereby examining its diffusion and phylogeography...
January 2016: Virus Evolution
Gytis Dudas, Andrew Rambaut
Recombination is a process that unlinks neighboring loci allowing for independent evolutionary trajectories within genomes of many organisms. If not properly accounted for, recombination can compromise many evolutionary analyses. In addition, when dealing with organisms that are not obligately sexually reproducing, recombination gives insight into the rate at which distinct genetic lineages come into contact. Since June 2012, Middle East respiratory syndrome coronavirus (MERS-CoV) has caused 1,106 laboratory-confirmed infections, with 421 MERS-CoV-associated deaths as of 16 April 2015...
January 2016: Virus Evolution
Sanjay Tanday
No abstract text is available yet for this article.
October 20, 2016: Lancet Oncology
Kathleen O Degnan, Emily A Blumberg
Patients infected with human immunodeficiency virus (HIV) are living longer, healthier lives on highly active antiretroviral therapy and, as a result, interest in kidney transplantation for HIV-infected patients with end-stage renal disease has increased. HIV is no longer considered a contraindication to solid-organ transplantation and the number of kidney transplants performed in HIV-infected patients each year is increasing steadily. HIV-infected kidney transplant recipients have had excellent outcomes overall, but there are still significant challenges, including high rates of acute rejection, drug-drug interactions, and poor outcomes in patients co-infected with hepatitis C virus...
September 2016: Seminars in Nephrology
Qing Song, Bao-Ping Xu, Kun-Ling Shen
OBJECTIVE: To describe the frequency and impact of bacterial co-infections in children hospitalized with Mycoplasma pneumoniae pneumonia. DESIGN: Retrospective, descriptive study. SETTING: Tertiary-care hospital in Beijing, China. PARTICIPANTS: 8612 children admitted to Beijing Childrens Hospital from June 2006 to June 2014. METHODS: According to the testing results of etiology we divided the cases into pure M...
October 8, 2016: Indian Pediatrics
Dulce Alfaiate, Julie Lucifora, Natali Abeywickrama-Samarakoon, Maud Michelet, Barbara Testoni, Jean-Claude Cortay, Camille Sureau, Fabien Zoulim, Paul Dény, David Durantel
Hepatitis D virus (HDV) super-infection of Hepatitis B virus (HBV)-infected patients is the most aggressive form of viral hepatitis. HDV infection is not susceptible to direct anti-HBV drugs, and only suboptimal antiviral responses are obtained with interferon (IFN)-alpha-based therapy. To get insights on HDV replication and interplay with HBV in physiologically relevant hepatocytes, differentiated HepaRG (dHepaRG) cells, previously infected or not with HBV, were infected with HDV, and viral markers were extensively analyzed...
October 19, 2016: Antiviral Research
Ana Claudia de Menezes Cruz, Renato Luiz Silveira, Camila Freze Baez, Rafael Brandão Varella, Tatiana Xavier de Castro
Simultaneous Porcine circovirus type 2 (PCV-2) and Torque teno sus virus (TTSuV) infections have been reported around the world, generally linked to severe infections. In the present study, 257 swine plasma samples from 31 swine herds located in Brazil, were PCR screened for PCV-2 and TTSuV-1/2 and correlated with clinical data. PCV-2 was detected in 25%, followed by 38.1% and 42.4% of TTSuV-1 and TTSuV-2, respectively. Co-infections of two or three viruses were found in 32.3% of samples. PCV-2 was more frequently detected in the growing (p=0...
November 15, 2016: Veterinary Microbiology
Morten Lund, Magnus Vikan Røsæg, Aleksei Krasnov, Gerrit Timmerhaus, Ingvild Berg Nyman, Vidar Aspehaug, Espen Rimstad, Maria Krudtaa Dahle
Viral diseases are among the main challenges in farming of Atlantic salmon (Salmo salar). The most prevalent viral diseases in Norwegian salmon aquaculture are heart and skeletal muscle inflammation (HSMI) caused by Piscine orthoreovirus (PRV), and pancreas disease (PD) caused by Salmonid alphavirus (SAV). Both PRV and SAV target heart and skeletal muscles, but SAV additionally targets exocrine pancreas. PRV and SAV are often present in the same locations and co-infections occur, but the effect of this crosstalk on disease development has not been investigated...
October 21, 2016: Veterinary Research
Tshifhiwa Magoro, George Gachara, Lufuno Mavhandu, Emmaculate Lum, Helen K Kimbi, Roland N Ndip, Pascal Bessong
BACKGROUND: HBV and HIV share similar transmission routes. Concurrent infection with the two viruses usually results in more severe and progressive liver disease, and a higher incidence of cirrhosis, liver cancer and mortality. Further, this co-infection may lead to cross-resistance between HIV and HBV drugs and increased liver injury, either due to direct hepatotoxicity or drug-related immune-reconstitution hepatitis. These challenges necessitate continuous surveillance for HBV among HIV infected individuals to guide patient management...
October 21, 2016: Virology Journal
Kathryn Schnippel, Rebecca H Berhanu, Andrew Black, Cynthia Firnhaber, Norah Maitisa, Denise Evans, Edina Sinanovic
BACKGROUND: According to the World Health Organization, South Africa ranks as one of the highest burden of TB, TB/HIV co-infection, and drug-resistant TB (DR-TB) countries. DR-TB treatment is complicated to administer and relies on the use of multiple toxic drugs, with potential for severe adverse drug reactions. We report the occurrence of adverse events (AEs) during a standardised DR-TB treatment regimen at two outpatient, decentralized, public-sector sites in Johannesburg, South Africa...
October 21, 2016: BMC Infectious Diseases
Wang Wei, Zhang Wei-Sheng, Alayi Ahan, Yan Ci, Zhang Wei-Wen, Cao Ming-Qin
OBJECTIVE: This study was aimed to find out epidemiologic characteristic of tuberculosis (TB) cases, and Human Immunodeficiency Virus (HIV) positive cases among TB patients (TB/HIV co-infection) through demographic, temporal, and spatial study in Urumqi. METHODS: Descriptive statistics and multivariate logistic regression were applied to identify the epidemiologic characteristics and risk factors of TB epidemic and TB/HIV co-infection epidemic. All addresses of each TB case, TB/HIV co-infection case, and administrative street were transformed into geographical coordinate...
2016: PloS One
Manan Jhaveri, Nicholas Procaccini, Kris V Kowdley
Chronic Hepatitis C is a major public health problem. The chronicity of the Hepatitis C can lead to advanced liver disease, cirrhosis and even hepatocellular carcinoma. Chronic hepatitis C is the leading indication of for liver transplantation in the United States. Since the introduction of directly acting antiviral agents (DAAs), there have been there have been dramatic advances in treatment of hepatitis C in terms of tolerability, duration of therapy with significant increases in the rates of sustained virology response (SVR)...
October 21, 2016: Minerva Gastroenterologica e Dietologica
Qing-Bin Lu, Hao Li, Pan-He Zhang, Ning Cui, Zhen-Dong Yang, Ya-Di Fan, Xiao-Ming Cui, Jian-Gong Hu, Chen-Tao Guo, Xiao-Ai Zhang, Wei Liu, Wu-Chun Cao
During 2013-2015 in central China, co-infection with spotted fever group rickettsiae was identified in 77 of 823 patients infected with severe fever with thrombocytopenia syndrome virus. Co-infection resulted in delayed recovery and increased risk for death, prompting clinical practices in the region to consider co-infection in patients with severe fever with thrombocytopenia syndrome.
November 2016: Emerging Infectious Diseases
Roger R Fan, Leigh M Howard, Marie R Griffin, Kathryn M Edwards, Yuwei Zhu, John V Williams, Jorge E Vidal, Keith P Klugman, Ana I Gil, Claudio F Lanata, Carlos G Grijalva
We examined nasopharyngeal pneumococcal colonization density patterns surrounding acute respiratory illnesses (ARI) in young children in Peru. Pneumococcal densities were dynamic, gradually increasing leading up to an ARI, peaking during the ARI, and decreasing after the ARI. Rhinovirus co-infection was associated with higher pneumococcal densities.
November 2016: Emerging Infectious Diseases
Thomas Edwards, Leticia Del Carmen Castillo Signor, Christopher Williams, Evelin Donis, Luis E Cuevas, Emily R Adams
We screened serum samples referred to the national reference laboratory in Guatemala that were positive for chikungunya or dengue viruses in June 2015. Co-infection with both viruses was detected by reverse transcription PCR in 46 (32%) of 144 samples. Specimens should be tested for both arboviruses to detect co-infections.
November 2016: Emerging Infectious Diseases
Yu Mi Wi, Hye In Woo, Dahee Park, Keun Hwa Lee, Cheol-In Kang, Doo Ryeon Chung, Kyong Ran Peck, Jae-Hoon Song
To determine prevalence of severe fever with thrombocytopenia syndrome in South Korea, we examined serum samples from patients with fever and insect bite history in scrub typhus-endemic areas. During the 2013 scrub typhus season, prevalence of this syndrome among patients suspected of having scrub typhus was high (23.0%), suggesting possible co-infection.
November 2016: Emerging Infectious Diseases
Noboru Hirashima, Hiroaki Iwase, Masaaki Shimada, Nobumitsu Ryuge, Junji Imamura, Hiroki Ikeda, Yasuhito Tanaka, Nobuyuki Matsumoto, Chiaki Okuse, Fumio Itoh, Yoshiyuki Yokomaku, Tsunamasa Watanabe
Co-infection with human immunodeficiency virus (HIV) and hepatitis C virus (HCV) often accelerates the course of HCV-associated liver disease. Daclatasvir (DCV) plus asunaprevir (ASV) have been shown to be highly effective for HCV-infected patients with genotype 1b. Three patients co-infected with HIV/HCV genotype 1b were enrolled in this study. Prior to initiation of HCV treatment, the variants associated with L31 and Y93 in the non-structural protein 5A (NS5A) region of the HCV genome were confirmed to be absent using a direct sequencing method...
October 20, 2016: Clinical Journal of Gastroenterology
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