Travis Porco






Berlinberg EJ, Kim E, Deiner MS, Patterson C, Porco TC, Acharya NR. (2020). Seasonality of herpes zoster and herpes zoster ophthalmicus. Journal of clinical virology : the official publication of the Pan American Society for Clinical Virology, (126)

Keenan JD, Arzika AM, Maliki R, Elh Adamou S, Ibrahim F, Kiemago M, Galo NF, Lebas E, Cook C, Vanderschelden B, Bailey RL, West SK, Porco TC, Lietman TM,. (2020). Cause-specific mortality of children younger than 5 years in communities receiving biannual mass azithromycin treatment in Niger: verbal autopsy results from a cluster-randomised controlled trial. The Lancet. Global health, 8(2)

Ackley SF, Pilewski S, Petrovic VS, Worden L, Murray E, Porco TC. (2020). Assessing the utility of a smart thermometer and mobile application as a surveillance tool for influenza and influenza-like illness. Health informatics journal

Godwin W, Prada JM, Emerson P, Hooper PJ, Bakhtiari A, Deiner M, Porco TC, Mahmud H, Landskroner E, Hollingsworth TD, Medley GF, Pinsent A, Bailey R, Lietman TM, Oldenburg CE. (2020). Trachoma Prevalence After Discontinuation of Mass Azithromycin Distribution. The Journal of infectious diseases

Pickel J, Narayana S, Krishnan T, Ramakrishnan S, Samantaray PP, Porco TC, Redd T, Lietman TM, Rose-Nussbaumer J. (2020). The Prognostic Value of Persistent Culture Positivity in Fungal Keratitis in the Mycotic Antimicrobial Localized Injection Trial. American journal of ophthalmology

Lietman TM, Ayele B, Gebre T, Zerihun M, Tadesse Z, Emerson PM, Nash SD, Porco TC, Keenan JD, Oldenburg CE. (2020). Frequency of mass azithromycin distribution for ocular chlamydia in a trachoma endemic region of Ethiopia: a cluster randomized trial. American journal of ophthalmology

Kelly JD, Wannier SR, Sinai C, Moe CA, Hoff NA, Blumberg S, Selo B, Mossoko M, Chowell-Puente G, Jones JH, Okitolonda-Wemakoy E, Rutherford GW, Lietman TM, Muyembe-Tamfum JJ, Rimoin AW, Porco TC, Richardson ET. (2020). The impact of different types of violence on Ebola virus disease transmission during the 2018-2020 outbreak in the Democratic Republic of the Congo. The Journal of infectious diseases

Blumberg Seth, Lietman Thomas M, Porco Travis C. (2020). Assessing the plausibility of subcritical transmission of 2019-nCoV in the United States. Cold Spring Harbor Laboratory Press

Deiner MS, McLeod SD, Wong J, Chodosh J, Lietman TM, Porco TC. (2019). Google Searches and Detection of Conjunctivitis Epidemics Worldwide. Ophthalmology, 126(9)

Kim MC, Okada K, Ryner AM, Amza A, Tadesse Z, Cotter SY, Gaynor BD, Keenan JD, Lietman TM, Porco TC. (2019). Sensitivity and specificity of computer vision classification of eyelid photographs for programmatic trachoma assessment. PLoS One, 14(2)

Kelly JD, Worden L, Wannier SR, Hoff NA, Mukadi P, Sinai C, Ackley S, Chen X, Gao D, Selo B, Mossoko M, Okitolonda-Wemakoy E, Richardson ET, Rutherford GW, Lietman TM, Muyembe-Tamfum JJ, Rimoin AW, Porco TC. (2019). Projections of Ebola outbreak size and duration with and without vaccine use in Équateur, Democratic Republic of Congo, as of May 27, 2018. PLoS One, 14(3)

Porco TC, Oldenburg CE, Arzika AM, Kalua K, Mrango Z, Cook C, Lebas E, Bailey RL, West SK, Oron AP, Keenan JD, Lietman TM, For The Mordor Study Group. (2019). Efficacy of Mass Azithromycin Distribution for Reducing Childhood Mortality Across Geographic Regions. The American journal of tropical medicine and hygiene

Ackley SF, Lee RS, Worden L, Zwick E, Porco TC, Behr MA, Pepperell CS. (2019). Multiple exposures, reinfection and risk of progression to active tuberculosis. Royal Society open science, 6(3)

Morberg DP, Alemayehu W, Melese M, Lakew T, Sisay A, Zhou Z, Cevallos V, Oldenburg CE, Porco TC, Lietman TM, Keenan JD. (2019). A Longitudinal Analysis of Chlamydial Infection and Trachomatous Inflammation Following Mass Azithromycin Distribution. Ophthalmic epidemiology, 26(1)

Grantz KH, Chabaari W, Samuel RK, Gershom B, Blum L, Worden L, Ackley S, Liu F, Lietman TM, Galvani AP, Prajna L, Porco TC. (2018). Spatial distribution of leprosy in India: an ecological study. Infectious diseases of poverty, 7(1)

Lietman TM, Worden L, Liu F, Porco TC. (2018). The distribution of district-level leprosy incidence in India is geometric-stable, consistent with subcriticality. Epidemics, (24)

Porco TC, Lietman TM. (2018). A Fragility Index: Handle with Care. Ophthalmology, 125(5)

Porco TC, Hart J, Arzika AM, Weaver J, Kalua K, Mrango Z, Cotter SY, Stoller NE, O'Brien KS, Fry DM, Vanderschelden B, Oldenburg CE, West SK, Bailey RL, Keenan JD, Lietman TM, . (2019). Mass Oral Azithromycin for Childhood Mortality: Timing of Death After Distribution in the MORDOR Trial. Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 68(12)

Ramirez DA, Porco TC, Lietman TM, Keenan JD. (2018). Ocular Injury in United States Emergency Departments: Seasonality and Annual Trends Estimated from a Nationally Representative Dataset. American journal of ophthalmology, (191)

Lietman TM, Pinsent A, Liu F, Deiner M, Hollingsworth TD, Porco TC. (2018). Models of Trachoma Transmission and Their Policy Implications: From Control to Elimination. Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 66(suppl_4)

Keenan JD, Tadesse Z, Gebresillasie S, Shiferaw A, Zerihun M, Emerson PM, Callahan K, Cotter SY, Stoller NE, Porco TC, Oldenburg CE, Lietman TM. (2018). Mass azithromycin distribution for hyperendemic trachoma following a cluster-randomized trial: A continuation study of randomly reassigned subclusters (TANA II). PLoS medicine, 15(8)

Lietman TM, Deiner MS, Oldenburg CE, Nash SD, Keenan JD, Porco TC. (2018). Identifying a sufficient core group for trachoma transmission. PLoS neglected tropical diseases, 12(10)

Deiner MS, McLeod SD, Chodosh J, Oldenburg CE, Fathy CA, Lietman TM, Porco TC. (2018). Clinical Age-Specific Seasonal Conjunctivitis Patterns and Their Online Detection in Twitter, Blog, Forum, and Comment Social Media Posts. Investigative ophthalmology & visual science, 59(2)

Worden L, Schwartz IB, Bianco S, Ackley SF, Lietman TM, Porco TC. (2017). Hamiltonian Analysis of Subcritical Stochastic Epidemic Dynamics. Computational and mathematical methods in medicine, (2017)

Deiner MS, Fathy C, Kim J, Niemeyer K, Ramirez D, Ackley SF, Liu F, Lietman TM, Porco TC. (2019). Facebook and Twitter vaccine sentiment in response to measles outbreaks. Health informatics journal, 25(3)

Deiner MS, Lietman TM, Porco TC. (2017). Uncertainties in Big Data When Using Internet Surveillance Tools and Social Media for Determining Patterns in Disease Incidence-Reply. JAMA ophthalmology, 135(4)

Deiner MS, Worden L, Rittel A, Ackley SF, Liu F, Blum L, Scott JC, Lietman TM, Porco TC. (2017). Short-term leprosy forecasting from an expert opinion survey. PLoS One, 12(8)

Worden L, Porco TC. (2017). Products of Compartmental Models in Epidemiology. Computational and mathematical methods in medicine, (2017)

Khurana RN, Chang LK, Porco TC. (2017). Incidence of Presumed Silicone Oil Droplets in the Vitreous Cavity After Intravitreal Bevacizumab Injection With Insulin Syringes. JAMA ophthalmology, 135(7)

Ramirez DA, Porco TC, Lietman TM, Keenan JD. (2017). Epidemiology of Conjunctivitis in US Emergency Departments. JAMA ophthalmology, 135(10)

Deiner MS, Worden L, Rittel A, Ackley SF, Liu F, Blum L, Scott JC, Lietman TM, Porco TC. (2017). Correction: Short-term leprosy forecasting from an expert opinion survey. PLoS One, 12(12)

Ackley SF, Hacker JK, Enanoria WTA, Worden L, Blumberg S, Porco TC, Zipprich J. (2018). Genotype-Specific Measles Transmissibility: A Branching Process Analysis. Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 66(8)

Chen YH, McFarland W, Raymond HF, Scott HM, Vittinghoff E, Porco TC. (2017). Distribution of Behavioral Patterns Before Infection Among San Francisco Men Who Have Sex With Men Newly Infected With HIV in 2014. Journal of acquired immune deficiency syndromes (1999), 75(5)

Pinsent A, Liu F, Deiner M, Emerson P, Bhaktiari A, Porco TC, Lietman T, Gambhir M. (2017). Probabilistic forecasts of trachoma transmission at the district level: A statistical model comparison. Epidemics, (18)

Blok DJ, Crump RE, Sundaresh R, Ndeffo-Mbah M, Galvani AP, Porco TC, de Vlas SJ, Medley GF, Richardus JH. (2017). Forecasting the new case detection rate of leprosy in four states of Brazil: A comparison of modelling approaches. Epidemics, (18)

Gao D, Lietman TM, Dong CP, Porco TC. (2017). Mass drug administration: the importance of synchrony. Mathematical medicine and biology : a journal of the IMA, 34(2)

Gao D, Porco TC, Ruan S. (2016). Coinfection Dynamics of Two Diseases in a Single Host Population. Journal of mathematical analysis and applications, 442(1)

Gao D, Lou Y, He D, Porco TC, Kuang Y, Chowell G, Ruan S. (2016). Prevention and Control of Zika as a Mosquito-Borne and Sexually Transmitted Disease: A Mathematical Modeling Analysis. Scientific reports, (6)

Deiner MS, Lietman TM, McLeod SD, Chodosh J, Porco TC. (2016). Surveillance Tools Emerging From Search Engines and Social Media Data for Determining Eye Disease Patterns. JAMA ophthalmology, 134(9)

Enanoria WT, Liu F, Zipprich J, Harriman K, Ackley S, Blumberg S, Worden L, Porco TC. (2016). The Effect of Contact Investigations and Public Health Interventions in the Control and Prevention of Measles Transmission: A Simulation Study. PLoS One, 11(12)

Enanoria WT, Worden L, Liu F, Gao D, Ackley S, Scott J, Deiner M, Mwebaze E, Ip W, Lietman TM, Porco TC. (2016). Correction: Evaluating Subcriticality during the Ebola Epidemic in West Africa. PLoS One, 11(6)

Porco TC, Keenan JD, Enanoria WT, Lietman TM. (2016). The permuted locus trial--Well suited for emerging pathogens?. Contemporary clinical trials, (47)

Brook CE, Beauclair R, Ngwenya O, Worden L, Ndeffo-Mbah M, Lietman TM, Satpathy SK, Galvani AP, Porco TC. (2015). Spatial heterogeneity in projected leprosy trends in India. Parasites & vectors, (8)

Liu F, Porco TC, Amza A, Kadri B, Nassirou B, West SK, Bailey RL, Keenan JD, Lietman TM. (2015). Short-term forecasting of the prevalence of clinical trachoma: utility of including delayed recovery and tests for infection. Parasites & vectors, (8)

Enanoria WT, Worden L, Liu F, Gao D, Ackley S, Scott J, Deiner M, Mwebaze E, Ip W, Lietman TM, Porco TC. (2015). Evaluating Subcriticality during the Ebola Epidemic in West Africa. PLoS One, 10(10)

Bellan SE, Pulliam JR, Pearson CA, Champredon D, Fox SJ, Skrip L, Galvani AP, Gambhir M, Lopman BA, Porco TC, Meyers LA, Dushoff J. (2015). Statistical power and validity of Ebola vaccine trials in Sierra Leone: a simulation study of trial design and analysis. The Lancet. Infectious diseases, 15(6)

Scott JC, Shah N, Porco T, Flood J. (2015). Cost Resulting from Anti-Tuberculosis Drug Shortages in the United States: A Hypothetical Cohort Study. PloS one, 10(8)

Lietman TM, Gebre T, Abdou A, Alemayehu W, Emerson P, Blumberg S, Keenan JD, Porco TC. (2015). The distribution of the prevalence of ocular chlamydial infection in communities where trachoma is disappearing. Epidemics, (11)

Porco TC, Stoller NE, Keenan JD, Bailey RL, Lietman TM. (2015). Public key cryptography for quality assurance in randomization for clinical trials. Contemporary clinical trials, (42)

Hollingsworth TD, Adams ER, Anderson RM, Atkins K, Bartsch S, Basáñez MG, Behrend M, Blok DJ, Chapman LA, Coffeng L, Courtenay O, Crump RE, de Vlas SJ, Dobson A, Dyson L, Farkas H, Galvani AP, Gambhir M, Gurarie D, Irvine MA, Jervis S, Keeling MJ, Kelly-Hope L, King C, Lee BY, Le Rutte EA, Lietman TM, Ndeffo-Mbah M, Medley GF, Michael E, Pandey A, Peterson JK, Pinsent A, Porco TC, Richardus JH, Reimer L, Rock KS, Singh BK, Stolk W, Swaminathan S, Torr SJ, Townsend J, Truscott J, Walker M, Zoueva A, . (2015). Quantitative analyses and modelling to support achievement of the 2020 goals for nine neglected tropical diseases. Parasites & vectors, (8)

Blumberg S, Worden L, Enanoria W, Ackley S, Deiner M, Liu F, Gao D, Lietman T, Porco T. (2015). Assessing Measles Transmission in the United States Following a Large Outbreak in California. PLoS currents, (7)


Gao D, Lietman TM, Porco TC. (2015). Antibiotic resistance as collateral damage: the tragedy of the commons in a two-disease setting. Mathematical biosciences, (263)

Blumberg S, Enanoria WT, Porco TC. (2015). Vaccination Compliance and the US Measles Epidemic. JAMA pediatrics, 169(9)

Liu F, Enanoria WT, Zipprich J, Blumberg S, Harriman K, Ackley SF, Wheaton WD, Allpress JL, Porco TC. (2015). The role of vaccination coverage, individual behaviors, and the public health response in the control of measles epidemics: an agent-based simulation for California. BMC Public Health, (15)

Rahman SA, West SK, Mkocha H, Munoz B, Porco TC, Keenan JD, Lietman TM. (2015). The distribution of ocular Chlamydia prevalence across Tanzanian communities where trachoma is declining. PLoS neglected tropical diseases, 9(3)

Liu F, Porco TC, Amza A, Kadri B, Nassirou B, West SK, Bailey RL, Keenan JD, Solomon AW, Emerson PM, Gambhir M, Lietman TM. (2015). Short-term Forecasting of the Prevalence of Trachoma: Expert Opinion, Statistical Regression, versus Transmission Models. PLoS neglected tropical diseases, 9(8)

Ackley SF, Liu F, Porco TC, Pepperell CS. (2019). Modeling historical tuberculosis epidemics among Canadian First Nations: effects of malnutrition and genetic variation. PeerJ, 3(1)

Rahman SA, West SK, Mkocha H, Muñoz B, Porco TC, Keenan JD, Lietman TM. (2015). Correction: The Distribution of Ocular Chlamydia Prevalence across Tanzanian Communities Where Trachoma Is Declining. PLoS neglected tropical diseases, 9(5)

Liu F, Porco TC, Amza A, Kadri B, Nassirou B, West SK, Bailey RL, Keenan JD, Solomon AW, Emerson PM, Gambhir M, Lietman TM. (2015). Correction: Short-term Forecasting of the Prevalence of Trachoma: Expert Opinion, Statistical Regression, versus Transmission Models. PLoS neglected tropical diseases, 9(9)

Halloran ME, Vespignani A, Bharti N, Feldstein LR, Alexander KA, Ferrari M, Shaman J, Drake JM, Porco T, Eisenberg JN, Del Valle SY, Lofgren E, Scarpino SV, Eisenberg MC, Gao D, Hyman JM, Eubank S, Longini IM Jr.. (2014). Ebola: mobility data. Science (New York, N.Y.), 346(6208)

Gao D, Amza A, Nassirou B, Kadri B, Sippl-Swezey N, Liu F, Ackley SF, Lietman TM, Porco TC. (2014). Optimal seasonal timing of oral azithromycin for malaria. The American journal of tropical medicine and hygiene, 91(5)

Lofgren ET, Halloran ME, Rivers CM, Drake JM, Porco TC, Lewis B, Yang W, Vespignani A, Shaman J, Eisenberg JN, Eisenberg MC, Marathe M, Scarpino SV, Alexander KA, Meza R, Ferrari MJ, Hyman JM, Meyers LA, Eubank S. (2014). Opinion: Mathematical models: a key tool for outbreak response. Proceedings of the National Academy of Sciences of the United States of America, 111(51)

McNamara NA, Gallup M, Porco TC. (2014). Establishing PAX6 as a biomarker to detect early loss of ocular phenotype in human patients with Sjögren's syndrome. Investigative ophthalmology & visual science, 55(11)

Ray KJ, Zhou Z, Cevallos V, Chin S, Enanoria W, Lui F, Lietman TM, Porco TC. (2014). Estimating community prevalence of ocular Chlamydia trachomatis infection using pooled polymerase chain reaction testing. Ophthalmic epidemiology, 21(2)

Sippl-Swezey N, Enanoria WT, Porco TC. (2014). Conflicts of interest during contact investigations: a game-theoretic analysis. Computational and mathematical methods in medicine, (2014)

Liu F, Enanoria WT, Ray KJ, Coffee MP, Gordon A, Aragón TJ, Yu G, Cowling BJ, Porco TC. (2014). Effect of the one-child policy on influenza transmission in China: a stochastic transmission model. PLoS One, 9(2)

Blumberg S, Enanoria WT, Lloyd-Smith JO, Lietman TM, Porco TC. (2014). Identifying postelimination trends for the introduction and transmissibility of measles in the United States. American journal of epidemiology, 179(11)

Liu F, Porco TC, Mkocha HA, Muñoz B, Ray KJ, Bailey RL, Lietman TM, West SK. (2014). The efficacy of oral azithromycin in clearing ocular chlamydia: mathematical modeling from a community-randomized trachoma trial. Epidemics, (6)

Stewart JM, Estrada MM, Porco TC. (2013). Incidence of unplanned return to the operating room following vitreoretinal surgery at a public teaching hospital. Current eye research, 38(8)

Liu F, Porco TC, Ray KJ, Bailey RL, Mkocha H, Muñoz B, Quinn TC, Lietman TM, West SK. (2013). Assessment of transmission in trachoma programs over time suggests no short-term loss of immunity. PLoS neglected tropical diseases, 7(7)

Maher MC, Alemayehu W, Lakew T, Gaynor BD, Haug S, Cevallos V, Keenan JD, Lietman TM, Porco TC. (2012). The fitness cost of antibiotic resistance in Streptococcus pneumoniae: insight from the field. PLoS One, 7(1)

Porco TC, Oh P, Flood JM. (2013). Antituberculosis drug resistance acquired during treatment: an analysis of cases reported in California, 1994-2006. Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 56(6)

Lin CC, Lalitha P, Srinivasan M, Prajna NV, McLeod SD, Acharya NR, Lietman TM, Porco TC. (2012). Seasonal trends of microbial keratitis in South India. Cornea, 31(10)

Porco TC, Gao D, Scott JC, Shim E, Enanoria WT, Galvani AP, Lietman TM. (2012). When does overuse of antibiotics become a tragedy of the commons?. PLoS One, 7(12)

Lalitha P, Lin CC, Srinivasan M, Mascarenhas J, Prajna NV, Keenan JD, McLeod SD, Acharya NR, Lietman TM, Porco TC. (2012). Acanthamoeba keratitis in South India: a longitudinal analysis of epidemics. Ophthalmic epidemiology, 19(2)

Lietman TM, Gebre T, Ayele B, Ray KJ, Maher MC, See CW, Emerson PM, Porco TC, . (2011). The epidemiological dynamics of infectious trachoma may facilitate elimination. Epidemics, 3(2)

Porco TC, Gebre T, Ayele B, House J, Keenan J, Zhou Z, Hong KC, Stoller N, Ray KJ, Emerson P, Gaynor BD, Lietman TM. (2009). Effect of mass distribution of azithromycin for trachoma control on overall mortality in Ethiopian children: a randomized trial. JAMA, 302(9)

Sánchez MS, Lloyd-Smith JO, Williams BG, Porco TC, Ryan SJ, Borgdorff MW, Mansoer J, Dye C, Getz WM. (2009). Incongruent HIV and tuberculosis co-dynamics in Kenya: interacting epidemics monitor each other. Epidemics, 1(1)

Sánchez MS, Lloyd-Smith JO, Porco TC, Williams BG, Borgdorff MW, Mansoer J, Salomon JA, Getz WM. (2008). Impact of HIV on novel therapies for tuberculosis control. AIDS (London, England), 22(8)

Banerjee R, Schecter GF, Flood J, Porco TC. (2008). Extensively drug-resistant tuberculosis: new strains, new challenges. Expert review of anti-infective therapy, 6(5)

Porco TC, Getz WM. (2007). Controlling extensively drug-resistant tuberculosis. Lancet, 370(9597)

Eisenberg JN, Scott JC, Porco T. (2007). Integrating disease control strategies: balancing water sanitation and hygiene interventions to reduce diarrheal disease burden. American journal of public health, 97(5)

Salomon JA, Lloyd-Smith JO, Getz WM, Resch S, Sanchez MS, Porco TC, Borgdorff MW. (2006). Prospects for advancing tuberculosis control efforts through novel therapies. PLoS medicine, 3(8)

Porco TC, Lewis B, Marseille E, Grinsdale J, Flood JM, Royce SE. (2006). Cost-effectiveness of tuberculosis evaluation and treatment of newly-arrived immigrants. BMC Public Health, (6)

Sánchez MS, Grant RM, Porco TC, Getz WM. (2006). HIV drug-resistant strains as epidemiologic sentinels. Emerging infectious diseases, 12(2)

Lietman TM, Gaynor B, Porco T. (2005). Single-dose azithromycin for trachoma. The New England journal of medicine, 352(4)

Sánchez MS, Grant RM, Porco TC, Gross KL, Getz WM. (2005). A decrease in drug resistance levels of the HIV epidemic can be bad news. Bulletin of mathematical biology, 67(4)

Porco TC, Lloyd-Smith JO, Gross KL, Galvani AP. (2005). The effect of treatment on pathogen virulence. Journal of theoretical biology, 233(1)

Porco TC, Holbrook KA, Fernyak SE, Portnoy DL, Reiter R, Aragón TJ. (2004). Logistics of community smallpox control through contact tracing and ring vaccination: a stochastic network model. BMC Public Health, (4)

Porco TC, Martin JN, Page-Shafer KA, Cheng A, Charlebois E, Grant RM, Osmond DH. (2004). Decline in HIV infectivity following the introduction of highly active antiretroviral therapy. AIDS (London, England), 18(1)

Eisenberg JN, Lewis BL, Porco TC, Hubbard AH, Colford JM Jr.. (2003). Bias due to secondary transmission in estimation of attributable risk from intervention trials. Epidemiology (Cambridge, Mass.), 14(4)