Bala Swaminathan

Short-term genome evolution of Listeria monocytogenesin a non-controlled environment (2008)

Orsi, Renato H, Borowsky, Mark L, Lauer, Peter, Young, Sarah K, Nusbaum, Chad, Galagan, James E, ...

Abstract Background While increasing data on bacterial evolution in controlled environments are available, our understanding of bacterial genome evolution in natural environments is limited. We thus...

Synopses PulseNet: The Molecular Subtyping Network for Foodborne Bacterial Disease (2008)

Surveillance United States, Bala Swaminathan, Timothy J. Barrett, Susan B. Hunter, Robert V. Tauxe

PulseNet, the national molecular subtyping network for foodborne disease surveillance, was established by the Centers for Disease Control and Prevention and several state health department...

Short-term genome evolution of Listeria monocytogenes in a non-controlled environment (2008)

Orsi, Renato H., Borowsky, Mark L., Lauer, Peter, Young, Sarah K., Nusbaum, Chad, Galagan, James E., ...

Background: While increasing data on bacterial evolution in controlled environments are available, our understanding of bacterial genome evolution in natural environments is limited. We thus...

Data Handles and Virtual Connections: High-level Support for Anonymous Reconfiguration (2007)

Bala Swaminathan, Kenneth J. Goldman

Data handles and virtual connections are presented as a solution to the problem of supporting applicationdriven reconfiguration without sacrificing the separation of communication and computation....

Probing genomic diversity and evolution of Escherichia coli O157 by single nucleotide polymorphisms (2006)

Zhang, Wei, Qi, Weihong, Albert, Thomas J., Motiwala, Alifiya S., Alland, David, Hyytia-Trees, Eija K., ...

Infections by Shiga toxin-producing Escherichia coli O157:H7 (STEC O157) are the predominant cause of bloody diarrhea and hemolytic uremic syndrome in the United States. In silico comparison of the...

Probing genomic diversity and evolution of Escherichia coli O157 by single-nucleotide polymorphisms (2006)

Zhang, Wei, Qi, Weihong, Albert, Thomas J., Motiwala, Alifiya S., Alland, David, Hyytia-Trees, Eija K., ...

Infections by Shiga toxin-producing Escherichia coli O157:H7 (STEC O157) are the predominant cause of bloody diarrhea and hemolytic uremic syndrome in the United States. In silico comparison of the...

Rapid Pulsed-Field Gel Electrophoresis Protocol for Subtyping of Campylobacter jejuni (2001)

Efrain M. Ribot, Collette Fitzgerald, Kristy Kubota, Bala Swaminathan, J. Barrett

We developed a rapid pulsed-field gel electrophoresis (PFGE) protocol for subtyping Campylobacter isolates based on the standardized protocols used by PulseNet laboratories for the subtyping of other...

Dynamic Reconfiguration with I/O Abstraction (1995)

Saint Louis, Bala Swaminathan, Bala Swaminathan, Kenneth J. Goldman, Kenneth J. Goldman

ion Bala Swaminathan Kenneth J. Goldman WUCS-93-21 August 20 1993 Revised March 17 1995 Department of Computer Science Washington University Campus Box 1045 One Brookings Drive Saint Louis, MO...

Building Interactive Distributed Applications in C++ with The Programmers (1995)

Kenneth J. Goldman, T. Paul Mccartney, Ram Sethuraman, Bala Swaminathan, Todd Rodgers, Saint Louis

Contents 1 The Playground Philosophy 5 1.1 I/O abstraction : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 6 1.2 Basic Concepts : : : : : : : : : : : : : : : : :...

An Incremental Distributed Algorithm for Computing Biconnected Components (1994)

Saint Louis, Bala Swaminathan, Bala Swaminathan, Kenneth J. Goldman, Kenneth J. Goldman

This paper describes a distributed algorithm for computing the biconnected components of a dynamically changing graph. Our algorithm has a worst case communication complexity of O(b + c) messages for...

The Programmers' Playground: I/O Abstraction for Heterogeneous Distributed Systems (1993)

Saint Louis, Kenneth J. Goldman, Kenneth J. Goldman, Michael D. Anderson And Bala Swaminathan, Michael D. Anderson, Bala Swaminathan, ...

ion for Heterogeneous Distributed Systems Kenneth J. Goldman, Michael D. Anderson and Bala Swaminathan WUCS-93-29 June 1993 (supersedes WUCS-92-32, revised 2/94) Department of Computer Science...

Hierarchical Correctness Proofs for Recursive Distributed Algorithms using Dynamic Process Creation (1992)

Saint Louis, Bala Swaminathan, Bala Swaminathan, Kenneth J. Goldman, Kenneth J. Goldman

We present a new proof methodology that uses dynamic process creation to capture the structure of recursive distributed algorithms. Each recursive invocation of a distributed algorithm is modeled as...

Molecular Subtyping of Clostridium perfringens by Pulsed-Field Gel Electrophoresis To Facilitate Food-Borne-Disease Outbreak Investigations

Maslanka, Susan E., Kerr, Jared G., Williams, Glen, Barbaree, James M., Carson, Loretta A., Miller, J. Michael, ...

Clostridium perfringens is a common cause of food-borne illness. The illness is characterized by profuse diarrhea and acute abdominal pain. Since the illness is usually self-limiting, many cases are...

Ciprofloxacin Resistance in Campylobacter jejuni Isolates: Detection of gyrA Resistance Mutations by Mismatch Amplification Mutation Assay PCR and DNA Sequence Analysis

Zirnstein, Gerald, Li, Yu, Swaminathan, Bala, Angulo, Frederick

The gyrA quinolone resistance determining region was sequenced from 13 ciprofloxacin-resistant and 20 ciprofloxacin-susceptible Campylobacter jejuni isolates. All isolates resistant to ciprofloxacin...

Identification of Bartonella Species Directly in Clinical Specimens by PCR-Restriction Fragment Length Polymorphism Analysis of a 16S rRNA Gene Fragment

Matar, Ghassan M., Koehler, Jane E., Malcolm, Georgia, Lambert-Fair, Mary Ann, Tappero, Jordan, Hunter, Suzan B., ...

It is now established that two species of Bartonella, namely, Bartonella henselae and B. quintana, cause bacillary angiomatosis in human immunodeficiency virus-infected patients. In addition, B....

Rapid Pulsed-Field Gel Electrophoresis Protocol for Subtyping of Campylobacter jejuni

Ribot, Efrain M., Fitzgerald, Collette, Kubota, Kristy, Swaminathan, Bala, Barrett, Timothy J.

We developed a rapid pulsed-field gel electrophoresis (PFGE) protocol for subtyping Campylobacter isolates based on the standardized protocols used by PulseNet laboratories for the subtyping of other...

Pretreatment with Urea-Hydrochloric Acid Enhances the Isolation of Helicobacter pylori from Contaminated Specimens

Song, Qunsheng, Zirnstein, Gerald W., Swaminathan, Bala, Gold, Benjamin D.

Human saliva seeded with H. pylori was incubated in urea-HCl and then cultured on nonselective media. Pretreatment with 0.06 N HCl–0.08 M urea for 5 min at 37°C resulted in reproducible isolation...

Clonal Complexes of Campylobacter jejuni Identified by Multilocus Sequence Typing Correlate with Strain Associations Identified by Multilocus Enzyme Electrophoresis

Sails, Andrew D., Swaminathan, Bala, Fields, Patricia I.

Multilocus sequence typing (MLST) and pulsed-field gel electrophoresis (PFGE) with SmaI were used to subtype 55 isolates of Campylobacter jejuni from a diverse range of human and animal sources...

Utility of Multilocus Sequence Typing as an Epidemiological Tool for Investigation of Outbreaks of Gastroenteritis Caused by Campylobacter jejuni

Sails, Andrew D., Swaminathan, Bala, Fields, Patricia I.

Multilocus sequence typing (MLST) has been proven useful for the study of the global population structure of Campylobacter jejuni; however, its usefulness for the investigation of outbreaks of...

Genetic Markers Unique to Listeria monocytogenes Serotype 4b Differentiate Epidemic Clone II (Hot Dog Outbreak Strains) from Other Lineages

Evans, Matthew R., Swaminathan, Bala, Graves, Lewis M., Altermann, Eric, Klaenhammer, Todd R., Fink, Ryan C., ...

A small number of closely related strains of Listeria monocytogenes serotype 4b, designated epidemic clone I (ECI), have been implicated in numerous outbreaks of food-borne listeriosis described...

Probing genomic diversity and evolution of Escherichia coli O157 by single nucleotide polymorphisms

Zhang, Wei, Qi, Weihong, Albert, Thomas J., Motiwala, Alifiya S., Alland, David, Hyytia-Trees, Eija K., ...

Infections by Shiga toxin-producing Escherichia coli O157:H7 (STEC O157) are the predominant cause of bloody diarrhea and hemolytic uremic syndrome in the United States. In silico comparison of the...

Molecular Subtyping of Clostridium perfringens by Pulsed-Field Gel Electrophoresis To Facilitate Food-Borne-Disease Outbreak Investigations

Maslanka, Susan E., Kerr, Jared G., Williams, Glen, Barbaree, James M., Carson, Loretta A., Miller, J. Michael, ...

Clostridium perfringens is a common cause of food-borne illness. The illness is characterized by profuse diarrhea and acute abdominal pain. Since the illness is usually self-limiting, many cases are...

Ciprofloxacin Resistance in Campylobacter jejuni Isolates: Detection of gyrA Resistance Mutations by Mismatch Amplification Mutation Assay PCR and DNA Sequence Analysis

Zirnstein, Gerald, Li, Yu, Swaminathan, Bala, Angulo, Frederick

The gyrA quinolone resistance determining region was sequenced from 13 ciprofloxacin-resistant and 20 ciprofloxacin-susceptible Campylobacter jejuni isolates. All isolates resistant to ciprofloxacin...

Identification of Bartonella Species Directly in Clinical Specimens by PCR-Restriction Fragment Length Polymorphism Analysis of a 16S rRNA Gene Fragment

Matar, Ghassan M., Koehler, Jane E., Malcolm, Georgia, Lambert-Fair, Mary Ann, Tappero, Jordan, Hunter, Suzan B., ...

It is now established that two species of Bartonella, namely, Bartonella henselae and B. quintana, cause bacillary angiomatosis in human immunodeficiency virus-infected patients. In addition, B....

Rapid Pulsed-Field Gel Electrophoresis Protocol for Subtyping of Campylobacter jejuni

Ribot, Efrain M., Fitzgerald, Collette, Kubota, Kristy, Swaminathan, Bala, Barrett, Timothy J.

We developed a rapid pulsed-field gel electrophoresis (PFGE) protocol for subtyping Campylobacter isolates based on the standardized protocols used by PulseNet laboratories for the subtyping of other...

Pretreatment with Urea-Hydrochloric Acid Enhances the Isolation of Helicobacter pylori from Contaminated Specimens

Song, Qunsheng, Zirnstein, Gerald W., Swaminathan, Bala, Gold, Benjamin D.

Human saliva seeded with H. pylori was incubated in urea-HCl and then cultured on nonselective media. Pretreatment with 0.06 N HCl–0.08 M urea for 5 min at 37°C resulted in reproducible isolation...

Clonal Complexes of Campylobacter jejuni Identified by Multilocus Sequence Typing Correlate with Strain Associations Identified by Multilocus Enzyme Electrophoresis

Sails, Andrew D., Swaminathan, Bala, Fields, Patricia I.

Multilocus sequence typing (MLST) and pulsed-field gel electrophoresis (PFGE) with SmaI were used to subtype 55 isolates of Campylobacter jejuni from a diverse range of human and animal sources...

Utility of Multilocus Sequence Typing as an Epidemiological Tool for Investigation of Outbreaks of Gastroenteritis Caused by Campylobacter jejuni

Sails, Andrew D., Swaminathan, Bala, Fields, Patricia I.

Multilocus sequence typing (MLST) has been proven useful for the study of the global population structure of Campylobacter jejuni; however, its usefulness for the investigation of outbreaks of...

Genetic Markers Unique to Listeria monocytogenes Serotype 4b Differentiate Epidemic Clone II (Hot Dog Outbreak Strains) from Other Lineages

Evans, Matthew R., Swaminathan, Bala, Graves, Lewis M., Altermann, Eric, Klaenhammer, Todd R., Fink, Ryan C., ...

A small number of closely related strains of Listeria monocytogenes serotype 4b, designated epidemic clone I (ECI), have been implicated in numerous outbreaks of food-borne listeriosis described...

Probing genomic diversity and evolution of Escherichia coli O157 by single nucleotide polymorphisms

Zhang, Wei, Qi, Weihong, Albert, Thomas J., Motiwala, Alifiya S., Alland, David, Hyytia-Trees, Eija K., ...

Infections by Shiga toxin-producing Escherichia coli O157:H7 (STEC O157) are the predominant cause of bloody diarrhea and hemolytic uremic syndrome in the United States. In silico comparison of the...

Variation in virulence among clades of Escherichia coli O157:H7 associated with disease outbreaks

Manning, Shannon D., Motiwala, Alifiya S., Springman, A. Cody, Qi, Weihong, Lacher, David W., Ouellette, Lindsey M., ...

Escherichia coli O157:H7, a toxin-producing food and waterborne bacterial pathogen, has been linked to large outbreaks of gastrointestinal illness for more than two decades. E. coli O157 causes a...

Evaluation and Validation of a PulseNet Standardized Pulsed-Field Gel Electrophoresis Protocol for Subtyping Vibrio parahaemolyticus: an International Multicenter Collaborative Study▿

Kam, Kai Man, Luey, Cindy K. Y., Parsons, Michele B., Cooper, Kara L. F., Nair, G. B., Alam, M., ...

The pandemic spread of Vibrio parahaemolyticus is an international public health issue. Because of the outbreak potential of the organism, it is critical to establish an internationally recognized...