Ana Helena Perosa

ORCID: 0000-0003-1592-0793
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Respiratory viral infections research
  • Influenza Virus Research Studies
  • SARS-CoV-2 and COVID-19 Research
  • COVID-19 Clinical Research Studies
  • SARS-CoV-2 detection and testing
  • COVID-19 epidemiological studies
  • Vaccine Coverage and Hesitancy
  • Inflammatory mediators and NSAID effects
  • Cytomegalovirus and herpesvirus research
  • Viral Infections and Immunology Research
  • Pharmacogenetics and Drug Metabolism
  • COVID-19 and Mental Health
  • COVID-19 diagnosis using AI
  • Viral Infections and Outbreaks Research
  • Animal Disease Management and Epidemiology
  • Infection Control and Ventilation
  • Biosensors and Analytical Detection
  • Viral gastroenteritis research and epidemiology
  • Viral Infections and Vectors
  • Analytical Methods in Pharmaceuticals
  • Tracheal and airway disorders
  • COVID-19 and healthcare impacts
  • Dental Research and COVID-19
  • Epilepsy research and treatment
  • Food Safety and Hygiene

Universidade Federal de São Paulo
2012-2024

Hospital São Paulo
2019-2021

Fundação de Apoio à Universidade Federal de São Paulo
2010

Influenza-like illness (ILI) definitions have been used worldwide for influenza surveillance. These different case can vary with regard to sensitivity and predictive values laboratory confirmed influenza. The literature has indicated the inclusion of other viruses may be cause these variable results. objective study was evaluate ILI national sentinel criteria viral etiologies in adults diagnosed acute respiratory infection (ARI) and/or from 2001 2003 Sao Paulo, Brazil. Clinical evaluations...

10.1002/jmv.21295 article EN Journal of Medical Virology 2008-08-21

SARS coronavirus-2 (SARS-CoV-2) detection in different clinical specimens has raised important insights about its pathogenesis, but some details remain to be understood. In that respect, disrupt viral control seen solid organ transplant patients on chronic immunosuppression can help unveil pathogenic mechanisms and characterize new coronavirus disease-19 (COVID-19) immunological aspects, as well secondary complications. We herein report a case of SARS-CoV-2 ascitic fluid from kidney patient...

10.1007/s42399-020-00574-9 article EN other-oa SN Comprehensive Clinical Medicine 2020-10-08

BACKGROUND Coronavirus disease 2019 (COVID-19) is highly infectious causing millions of deaths worldwide. Nasopharyngeal swabs are the primary sample choice for diagnosis severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), thus, to decrease exposure potentially infected samples through collection a key point reduce risk infection in healthcare workers. OBJECTIVES This study aimed evaluate sensitivity and viral load saliva specimens by days symptoms onset comparing nasopharyngeal...

10.1590/0074-02760210018 article EN cc-by Memórias do Instituto Oswaldo Cruz 2021-01-01

In a single day, six of 150 (4%) asymptomatic visitors were diagnosed with COVID-19 at hospital universal masking policy. Two inpatients (contacts) subsequently developed symptoms. More rigorous protective measures during visitation periods may need to be included in infection control practices reduce nosocomial transmissions.

10.1016/j.ijid.2020.10.057 article EN cc-by-nc-nd International Journal of Infectious Diseases 2020-10-28

Influenza virus infections are associated with high morbidity and mortality. activity varies worldwide, regional detection is influenced by geographic conditions, demographic patient-risk factors. We assessed influenza patterns of seasonality during three consecutive years (2001-2003) in risk groups São Paulo city. Four-hundred-twelve outpatients acute respiratory infection were subjected to epidemiological, clinical laboratory investigations; these included community population (N=140),...

10.1590/s1413-86702007000400005 article EN cc-by-nc-nd The Brazilian Journal of Infectious Diseases 2007-08-01

BACKGROUND Influenza viral load (VL) can be a decisive factor in determining the antiviral efficacy clearance. OBJECTIVE This study aimed to evaluate rate of infection and role influenza VL on clinical spectrum illnesses among different patient groups attended at tertiary hospital Brazil. METHODS Samples were collected from patients presenting acute respiratory 2009 2013. Overall, 2262 samples analysed distributed into three groups: (i) asymptomatic (AS); (ii) symptomatic outpatients (OP);...

10.1590/0074-02760200009 article EN cc-by Memórias do Instituto Oswaldo Cruz 2020-01-01

Two antigenically distinct lineages of influenza B viruses, the Victoria-like and Yamagata-like strains, currently circulate among humans. Surveillance from United States America Europe over last 10 years showed that chance a correct matching between vaccine circulating lineage had been 50%. We investigated infection in different patient groups (asymptomatic, general community, with comorbidities hospitalised) attended at tertiary hospital city São Paulo, Brazil 2001-2013. All samples were...

10.1590/0074-02760150044 article EN cc-by Memórias do Instituto Oswaldo Cruz 2015-06-27

An abstract is not available for this content. As you have access to content, full HTML content provided on page. A PDF of also in through the 'Save PDF' action button.

10.1017/ice.2020.441 article EN cc-by Infection Control and Hospital Epidemiology 2020-08-26

Abstract First in Manaus the Brazilian Northern region, Variant of Concern P.1 traveled 3800 kilometers southeast to endanger Sao Paulo contributing collapse health system. Here, we show evidence how fast VOC has spread most populated city South America.

10.1101/2021.04.10.21255111 preprint EN cc-by-nd medRxiv (Cold Spring Harbor Laboratory) 2021-04-14

OBJECTIVE: This study evaluated the diagnostic performance of two methods for detection influenza virus in immunocompromised transplant patients.METHODS: A total 475 respiratory samples, 236 from patients a hematopoietic stem cell transplantation program and 239 kidney patients, were analyzed by direct fluorescence assay Centers Disease Control real-time polymerase chain reaction protocol B detection.RESULTS: Influenza using either method was 7.6% group 30.5% patient group.Influenza yielded...

10.6061/clinics/2013(09)05 article EN cc-by-nc Clinics 2013-09-01

Human rhinoviruses (HRVs) are the major cause of common cold. HRVs were recently reclassified into Enterovirus genus (HEV) in Picornaviridae family. and other members HEV share many features, including sense RNA genomes partial nucleotide sequence identity. The aim this study was to evaluate different HRV detection strategies. Samples from adults with acute respiratory infection (n = 291) who treated Sao Paulo Hospital (2001-2003) tested using three assays. first assay detected...

10.1590/s1517-83822012000200038 article EN Brazilian Journal of Microbiology 2012-06-01

We report a human coronavirus OC43 infection outbreak in hospitalized patients and healthcare workers São Paulo, Brazil, occurring after SARS-CoV-2 cases disappeared. Infection was associated with 5 (29.4%) patients. Routine surveillance including respiratory virus panel can improve detection both professionals

10.3201/eid3003.230990 article EN cc-by Emerging infectious diseases 2024-01-31
Coming Soon ...