Manuel Villarán

ORCID: 0000-0002-3964-0190
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About
Contact & Profiles
Research Areas
  • HIV/AIDS Research and Interventions
  • HIV, Drug Use, Sexual Risk
  • Adolescent Sexual and Reproductive Health
  • Sex work and related issues
  • Viral Infections and Vectors
  • Congenital Anomalies and Fetal Surgery
  • HIV Research and Treatment
  • SARS-CoV-2 and COVID-19 Research
  • Comparative constitutional jurisprudence studies
  • Respiratory viral infections research
  • Parasitic infections in humans and animals
  • Vaccine Coverage and Hesitancy
  • Influenza Virus Research Studies
  • Reproductive tract infections research
  • Intimate Partner and Family Violence
  • Legal processes and jurisprudence
  • Mosquito-borne diseases and control
  • Viral Infections and Immunology Research
  • Parasite Biology and Host Interactions
  • Syphilis Diagnosis and Treatment
  • Ectopic Pregnancy Diagnosis and Management
  • Assisted Reproductive Technology and Twin Pregnancy
  • Global Cancer Incidence and Screening
  • Economic and Financial Impacts of Cancer
  • Immune responses and vaccinations

Fred Hutch Cancer Center
2023-2025

Asociación Civil Impacta Salud y Educación
2015-2022

EsSALUD
2019

National University of San Marcos
1926-2014

United States Naval Medical Research Unit SOUTH
2009-2013

Instituto Nacional de Enfermedades Neoplásicas
2009

Naval Medical Research Command
2009

Universidad Peruana Cayetano Heredia
2005

<b>Background: </b> Neurocysticercosis (NCC) is the commonest helminthic CNS infection and main cause of adult-onset seizures in developing countries, also frequent industrialized countries because immigration from endemic zones. Although NCC commonly seen individuals with areas, its role as a epilepsy has been questioned on basis poor methodology published studies. <b>Objective: To determine, cysticercosis-endemic area northern Peruvian coast, frequency 1) epileptic seizures, 2) serum...

10.1212/01.wnl.0000168828.83461.09 article EN Neurology 2005-07-26

We report a 23% asymptomatic severe acute respiratory syndrome coronavirus 2 (SARS CoV-2) Omicron carriage rate in participants being enrolled into clinical trial South Africa, 15-fold higher than trials before Omicron. also found lower CD4 + T-cell counts persons with human immunodeficiency virus (HIV) strongly correlated increased odds of SARS-CoV-2 polymerase chain reaction (PCR) positive.

10.1093/cid/ciac237 article EN cc-by Clinical Infectious Diseases 2022-03-24

Background Neurocysticercosis accounts for 30%–50% of all late-onset epilepsy in endemic countries. We assessed the clustering patterns Taenia solium human cysticercosis seropositivity and seizures around tapeworm carriers seven rural communities Peru. Methodology The presence T. solium–specific antibodies was defined as one or more positive bands enzyme-linked immunoelectrotransfer blot (EITB). Neurocysticercosis-related cases were diagnosed clinically had neuroimaging EITB. Principal...

10.1371/journal.pntd.0000371 article EN cc-by PLoS neglected tropical diseases 2009-01-27

Background Acute respiratory illnesses and influenza-like (ILI) are a significant source of morbidity mortality worldwide. Despite the public health importance, little is known about etiology these acute in many regions South America. In 2006, Peruvian Ministry Health (MoH) US Naval Medical Research Center Detachment (NMRCD) initiated collaboration to characterize viral agents associated with ILI describe clinical epidemiological presentation affected population. Methodology/Principal...

10.1371/journal.pone.0006118 article EN cc-by PLoS ONE 2009-06-30

Human rhinoviruses (HRVs) belong to the Picornaviridae family with high similarity human enteroviruses (HEVs). Limited data is available from Latin America regarding clinical presentation and strains of these viruses in respiratory disease. We collected nasopharyngeal swabs at clinics located eight American countries 3,375 subjects aged 25 years or younger who presented influenza-like illness. Our had a median age 3 1.2:1.0 male:female ratio. HRV was identified 16% HEV 3%. HRVs accounted for...

10.1186/1743-422x-10-305 article EN cc-by Virology Journal 2013-10-11

&lt;i&gt;Background:&lt;/i&gt; Epilepsy is a serious neurological disorder and neurocysticercosis (NCC), the central nervous system infection by larvae of &lt;i&gt;Taenia solium&lt;/i&gt;, main cause acquired epilepsy in developing countries. NCC becoming more frequent industrialized countries due to immigration from endemic areas. Previously reported incidences range 30 50/100,000 people 90 122/100,000 &lt;i&gt;Objectives:&lt;/i&gt; To determine incidence cysticercosis area...

10.1159/000210019 article EN Neuroepidemiology 2009-01-01

10.1016/j.eclinm.2024.103054 article EN cc-by EClinicalMedicine 2025-01-20

10.17615/p4hj-9n46 article EN cc-by Carolina Digital Repository (University of North Carolina at Chapel Hill) 2025-02-01

Background Human parainfluenza viruses ( HPIV s) are common viral causes of community‐acquired pneumonia, particularly in children. The four types have world‐wide distribution; however, limited information exists about the epidemiological profile L atin‐ A merica. Objective Provide epidemiologic and phylogenetic s that circulated atin merica between 2006 2010 to better characterize extent variability this respiratory virus region. Methods Oropharyngeal swabs, demographic data clinical...

10.1111/irv.12211 article EN Influenza and Other Respiratory Viruses 2013-11-28

Abstract Background In addition to demonstrated public health benefits on reducing transmission, it remains unclear how early antiretroviral therapy (ART) must be started after acquisition of human immunodeficiency virus (HIV) maximize individual benefits. Methods We conducted an open-label randomized clinical study in Lima, Peru among adult men who have sex with and transgender women acute (HIV-antibody negative/HIV-1 RNA positive) or recent (confirmed negative HIV-antibody test within 3...

10.1093/cid/ciaa167 article EN Clinical Infectious Diseases 2020-02-26

While human illness associated with hantavirus infection has been documented in many countries of South America, evidence for transmission Peru limited to the isolation Rio Mamore virus from a pigmy mouse rat (Oligoryzomys microtis) Amazon city Iquitos. To address possibility exposure region, we screened febrile patients reporting health clinics Iquitos 2007 2010 serological recent infection. In addition, conducted survey hantavirus-reactive IgG among healthy participants residing and rural...

10.1089/vbz.2011.0820 article EN Vector-Borne and Zoonotic Diseases 2012-05-22

Expedited Partner Therapy (EPT) has been shown to improve treatment outcomes among heterosexual partners of individuals with curable sexually transmitted infections (STIs). Although the use EPT men who have sex (MSM) debated, due potential for missed opportunities diagnose unidentified cases HIV and syphilis infection in symptomatic partners, increases partner notification (PN) resulting from may promote testing otherwise partners. We assessed impact on self-reported PN MSM Peru gonorrheal...

10.1186/s12916-017-0858-9 article EN cc-by BMC Medicine 2017-05-03

The aim of this study was to analyze the rates condom use among military and police populations in Peru, focusing on differences by type partner. A Knowledge Attitudes Practices survey conducted 6,808 personnel 18 Peruvian cities between August–September 2006 September–October 2007. total 90.2% respondents were male; mean age 37.8 years 77.9% married/cohabiting. In all, 99.5% reported having had sex; 89% participants their last sexual contact with stable partner, 9.7% a nonstable 0.8% sex...

10.1177/1557988311431628 article EN American Journal of Men s Health 2012-03-07

A detailed understanding of intentions and practices related to partner notification (PN) following STI diagnosis can improve control strategies. We assessed participant-level partner-level factors guiding behaviour among men who have sex with and/or transgender women (MSM-TW) in Lima, Peru, including discordances between anticipated actual notification.Men newly diagnosed gonorrhoea, chlamydia syphilis 2012 2014 reported recent partners' characteristics, PN practices, outcomes diagnosis....

10.1136/sextrans-2017-053292 article EN Sexually Transmitted Infections 2017-11-30

A substantial body of literature has characterized how psychosocial factors, including HIV-related stigma and coping, are associated with HIV testing care utilization post-diagnosis. Less is known about if certain characteristics pre-diagnosis may also predict linkage to among individuals who receive an HIV-positive diagnosis. We examined awareness/perception dispositional coping styles predicted within three months post-diagnosis a secondary analysis 604 patients from randomized controlled...

10.1080/09540121.2018.1563282 article EN AIDS Care 2019-01-07

This pilot study examines associations of perceived stigma pre-diagnosis with experienced and social support post-diagnosis qualitative data; quantifies the interplay between pre- factors on depressive symptoms among a sample newly diagnosed Peruvian men who have sex (n = 67 total). Qualitative findings highlight differences perceptions pre-disclosure actual experiences post-disclosure for most participants. Perceived was significantly related to support, B -0.35, p 0.03, marginally...

10.1037/sah0000111 article EN other-oa Stigma and Health 2018-05-14

Essay| August 01 1926 II. Chile’s Policy of Aggression and Intimidation Manuel V Villaran Former President the University San Marcos, Lima, Peru Search for other works by this author on: This Site PubMed Google Scholar Current History (1925) 24 (5): 697–704. https://doi.org/10.1525/curh.1926.24.5.697 Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter LinkedIn Tools Get Permissions Cite Citation Villaran; Intimidation. 1 1925; doi: Download...

10.1525/curh.1926.24.5.697 article EN Current History 1926-08-01

Characterization of HIV risk factors among transwomen and men who have sex with (MSM) should be assessed separately independently. However, due to several constraints, these populations continue conflated in clinical research data. There are limited datasets globally powered make such comparisons. The study aimed use one the largest surveys MSM Latin America determine differences related correlates between two populations. Secondary data analysis was completed using a cross-sectional...

10.1371/journal.pgph.0001464 article EN cc-by PLOS Global Public Health 2023-01-12

10.2139/ssrn.4890648 preprint EN 2024-01-01

Background: Globally, there is evidence supporting the co-occurrence of intimate partner violence (IPV), substance use disorders (SUD) and mental health among women in prisons, however, limited research investigating these domains Andean region where rates female incarceration have increased. The study objective was to explore prevalence IPV, SUD depression incarcerated a Peruvian prison associations variables related correlates. Methods: 249 responded questionnaire about use, depression,...

10.3390/ijerph182111134 article EN International Journal of Environmental Research and Public Health 2021-10-23

In Lima, Perú, HIV prevalence is estimated to be 15% among men who have sex with (MSM) and 30% transgender women (TW). We investigated timely linkage of MSM TW care, as antiretroviral therapy (ART) critical protect the health those living prevent onward transmission. within 90 days diagnosis by matching data from two studies conducted in Lima between 2013 2015 national ART program records. used generalized linear modeling assess predictors late presentation care. Of 487 newly-diagnosed TW,...

10.1080/09540121.2021.1929818 article EN AIDS Care 2021-05-20

In Lima, Peru, men who have sex with (MSM) and transgender women (TW) are disproportionately affected by HIV. Patterns of sexual behavior vary partner type, which has implications for HIV prevention intervention design. We examine correlates condomless anal intercourse (CAI) each four types partners among HIV-negative MSM TW in Lima completed monthly questionnaires about partnership CAI. Odds ratios were calculated using generalized estimating equations to identify being different...

10.1080/09540121.2021.1994517 article EN AIDS Care 2021-10-26
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