Ana Paula Cunha Chaves

ORCID: 0000-0003-0321-6977
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About
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Research Areas
  • SARS-CoV-2 and COVID-19 Research
  • COVID-19 Clinical Research Studies
  • COVID-19 epidemiological studies
  • Infection Control and Ventilation
  • SARS-CoV-2 detection and testing
  • Vaccine Coverage and Hesitancy
  • Respiratory viral infections research
  • COVID-19 and Mental Health
  • Education during COVID-19 pandemic
  • COVID-19 and healthcare impacts
  • Urticaria and Related Conditions
  • Healthcare and Environmental Waste Management
  • Salmonella and Campylobacter epidemiology
  • Vasculitis and related conditions
  • Bacillus and Francisella bacterial research
  • Coding theory and cryptography
  • Blood disorders and treatments
  • Healthcare Regulation
  • Spatial Cognition and Navigation
  • Psychology and Mental Health
  • Pectus Deformity Diagnosis and Treatment
  • Fractal and DNA sequence analysis
  • Coagulation, Bradykinin, Polyphosphates, and Angioedema
  • Advanced Mathematical Theories and Applications
  • Viral gastroenteritis research and epidemiology

Universidade Federal de São Paulo
2020-2024

Universidade do Porto
2023

Hospital de São João
2010-2019

Universidade Tecnológica Federal do Paraná
2016

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

Introduction: There is a paucity of information regarding chronic urticaria patients’ care in real-world setting. The objective this study was to report and evaluate the baseline characteristics Portuguese patients refractory H1-antihistamines included AWARE study. Material Methods: This non-interventional cohort Adult with diagnosis symptoms for at least two months, H1-antihistamines, consulting one 10 participating centers throughout Portugal have been Baseline sociodemographic data,...

10.20344/amp.9496 article EN cc-by-nc-nd Acta Médica Portuguesa 2019-02-28

A 43-year-old female with antiphospholipid syndrome and Graves' disease developed a cutaneous leukocytoclastic vasculitis associated antineutrophil cytoplasmic antibody (ANCA) against myeloperoxidase (MPO-ANCA) proteinase-3 (PR3-ANCA), whilst treated propylthiouracil (PTU). The skin lesions were progressively resolved after withdrawal of PTU treatment oral steroids. Patch testing at 1%, 5%, 10% in petrolatum was positive 48 h. Despite ANCA titers 1 year follow-up, the patient maintains...

10.3109/15569527.2010.533318 article EN Cutaneous and Ocular Toxicology 2010-11-24

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

ABSTRACT This retrospective study aimed to investigate the impact of emergence new variants and epidemiological scenario on hospitalization rates unvaccinated children (0–12 years) in Brazil. The included 1614 admitted a hospital between March 2020 December 2022 but 101 (6.3%) them testing positive for COVID‐19 via RT‐PCR. frequency cases increased from 7.5% 9.3% with Omicron variant. Children over 5 years old comorbidities accounted most (69% [70/101]). Sickle cell anemia was frequent...

10.1111/irv.70011 article EN cc-by Influenza and Other Respiratory Viruses 2024-12-01

The waning of serum antibodies against severe acute respiratory syndrome coronavirus 2 observed in several studies raises questions about long-term immunity. Lower antibody levels are associated with new cases COVID-19 even postvaccination, leading to the administration booster doses.

10.47626/1679-4435-2022-1048 article EN cc-by Revista Brasileira de Medicina do Trabalho 2023-06-06

Quando se deslocam pelas cidades, as pessoas podem ter diferentes interesses. Pesquisas tem preocupado em considerar preferências dos usuários para fazer recomendações de trajetos e destinos. Entretanto, essas são, geral, relacionadas a tempo, distância custo do trajeto. Este artigo considera que outros interesses pessoais sociais impacto na escolha trajeto que, portanto, deveriam ser considerados sistemas recomendação personalizada. Para isso, o apresenta uma pesquisa exploratória analisa...

10.5753/sbsc.2016.9504 article PT 2016-07-04

ABSTRACT Background Health Care workers (HCW) are an important group affected by this pandemic and COVID-19 has presented substantial challenges for health professionals systems in many countries. The Brazilian vaccination plan implemented October, so that third dose HCW. However, the persistence of CoronaVac vaccine-induced immunity is unknown, immunogenicity according to age cohorts may differ among individuals. Objective Evaluate post immune humoral response relationship between...

10.1101/2021.12.30.21268532 preprint EN cc-by-nc-nd medRxiv (Cold Spring Harbor Laboratory) 2022-01-01

Chatbots are often designed to mimic social roles attributed humans. However, little is known about the impact on user's perceptions of using language that fails conform associated role. Our research draws sociolinguistic theory investigate how a chatbot's choices can adhere expected role agent performs within given context. In doing so, we seek understand whether chatbots design should account for linguistic register. This analyzes register differences play in shaping perception...

10.48550/arxiv.2101.11089 preprint EN other-oa arXiv (Cornell University) 2021-01-01

A pesquisa fenomenologica, a despeito de outros tipos pesquisa, nao parte hipoteses pre-estabelecidas sobre o fenomeno ser estudado, mas vai ao encontro da experiencia vivida para extrair dela os significados que irao configurar producao conhecimento acerca deste fenomeno. Para nos, esta apenas pode concebida na esfera intersubjetividade, no movimento dialogico dos participantes visando uma transformacao existencial, quer dizer, aparecimento do novo (a fala original, assim como pro- posta...

10.1590/s0103-166x1997000300006 article PT Estudos de Psicologia (Campinas) 1997-12-01

In 1972, Alnia\c{c}ik proved that every strong Liouville number is mapped into the set of $U_m$-numbers, for any non-constant rational function with coefficients belonging to an $m$-degree field. this paper, we generalize result by providing a larger class numbers (which, in particular, contains numbers) same property (this sharp certain sense).

10.48550/arxiv.1910.14190 preprint EN other-oa arXiv (Cornell University) 2019-01-01

Let $(F_n)_{n\geq 0}$ be the Fibonacci sequence given by recurrence $F_{n+2}=F_{n+1}+F_n$, for $n\geq 0$, where $F_0=0$ and $F_1=1$. There are several generalizations of this also interesting identities. In paper, we investigate a homogeneous relation that, in way, extends linear two variables, called {\it double-recurrence numbers}, ${F(m,n) = F(m-1, n-1)+F (m-2, n-2)}$, $n,m\geq 2$, $F (m, 0) F_m$, 1) F_{m+1}$, (0, n) F_n$ (1, F_{n+1}$. We exhibit formula to calculate values double...

10.48550/arxiv.1903.07490 preprint EN other-oa arXiv (Cornell University) 2019-01-01

A administração de vacinas contra o SARS-CoV-2 (severe acute respiratory syndrome coronavírus 2) se mostrou como uma das principais ações no combate e prevenção da COVID-19 (Coronavirus Disease 2019). presença anticorpos, assim a sua quantidade funcionalidade, tem grande influência controle infecção viral hospedeiro, podendo diminuir curso sintomatologia doença. caracterização resposta humoral à vacinação em populações pacientes com cardiopatias ainda é pouco conhecida. Desta forma, este...

10.1016/j.bjid.2021.102013 article PT cc-by-nc-nd The Brazilian Journal of Infectious Diseases 2022-01-01

O Brasil já administrou mais de 230 milhões doses vacinas contra a COVID-19, com aproximadamente 40% da população totalmente vacinada. A vacina ChAdOx1 nCoV-19 é uma das principais utilizadas no país e teve o início dos seu ensaios clínicos fase III iniciados em julho 2020. Estudos anticorpos neutralizantes surgimento variantes fomentaram discussão sobre as infecções por SARS-CoV-2 indivíduos imunizados, assim como se haveria alteração nos padrões carga viral e/ou maior transmissão,...

10.1016/j.bjid.2021.102035 article PT cc-by-nc-nd The Brazilian Journal of Infectious Diseases 2022-01-01

O vírus pandêmico SARS-CoV-2 evoluiu e variantes de preocupação (VOC) foram substituindo as anteriores até que uma nova VOC denominada Ômicron disseminou-se rapidamente suplantou a Delta circulava pelo país desde maio 2021. Em São Paulo, onda casos determinou grande impacto no primeiro trimestre 2022, gerando milhares infecções além internações óbitos. Descrever características dos pacientes hospitalizados durante da variante complexo do Hospital Paulo (HSP)–UNIFESP. Foram avaliados dados...

10.1016/j.bjid.2022.102488 article PT cc-by-nc-nd The Brazilian Journal of Infectious Diseases 2022-09-01

A pandemia da COVID-19 trouxe inúmeros desafios ao sistema de saúde em todo o mundo. O aumento dos casos SARS-CoV-2 impactou gerenciamento procedimentos cirúrgicos. À medida que cenário se tornava mais favorável, foi possível a retomada das cirurgias eletivas e emergência forma progressiva. Portanto, para evitar infecção hospitalar garantir um procedimento seguro, detecção tornou-se obrigatória todos os pacientes antes cirurgia, acordo com demanda atendimento cada unidade. Nesse sentido,...

10.1016/j.bjid.2022.102549 article PT cc-by-nc-nd The Brazilian Journal of Infectious Diseases 2022-09-01
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