Jorge Torgal

Mediterranean Spotted Fever in Portugal

Abstract: Mediterranean spotted fever (MSF) is the most important tick‐borne disease in Portugal. It is a notifiable disease and during 1989–2000 the annual incidence rate in Portugal was 9.8/105 inhabitants. Although recognized as a benign acute disease and treated mainly with ambulatory procedures, some cases are severe and fatalities have increased in the last few years. In 1997, MSF mortality became more evident in Beja, a Portuguese southern district, with a case fatality rate of 32.3% in hospitalized patients. Analysis of 55 variables regarding epidemiologic, clinical, laboratory, and therapeutic data of fatal and nonfatal MSF cases were compared to identify risk factors in 105 patients hospitalized in Beja District Hospital, between 1994 and 1998. It was statistically significant that the patients dying in 1997 were younger than those in other years. The risk of dying is statistically significant in those who presented with diabetes, vomiting, dehydration, and uremia. The interval between the onset of symptoms to administration of anti‐rickettsial therapy was the same for all patients. Therapy delay, reported by some authors to be associated with mortality of MSF, was not a risk factor in our study. The patients who died in 1997 died faster than those in other years. The variables studied could not explain the higher mortality rates observed in our study. Although one may speculate that the pathogenic strain of Israeli tick typhus, isolated in 1997, could be responsible for this increase of fatality rate, inherited patient factors might also be strongly associated with mortality.

Rickettsia sibirica isolation from a patient and detection in ticks, Portugal.

First R. sibirica–related strain is detected.

Host- and Microbe-Related Risk Factors for and Pathophysiology of Fatal Rickettsia conorii Infection in Portuguese Patients

BACKGROUND The pathophysiologic mechanisms that determine the severity of Mediterranean spotted fever (MSF) and the host-related and microbe-related risk factors for a fatal outcome are incompletely understood. METHODS This prospective study used univariate and multivariate analyses to determine the risk factors for a fatal outcome for 140 patients with Rickettsia conorii infection admitted to 13 Portuguese hospitals during 1994-2006 with documented identification of the rickettsial strain causing their infection. RESULTS A total of 71 patients (51%) were infected with the Malish strain of Rickettsia conorii, and 69 (49%) were infected with the Israeli spotted fever (ISF) strain. Patients were admitted to the intensive care unit (40 [29%]), hospitalized as routine inpatients (95[67%]), or managed as outpatients (5[4%]). Death occurred in 29 adults (21%). A fatal outcome was significantly more likely for patients infected with the ISF strain, and alcoholism was a risk factor. The pathophysiology of a fatal outcome involved significantly greater incidence of petechial rash, gastrointestinal symptoms, obtundation and/or confusion, dehydration, tachypnea, hepatomegaly, leukocytosis, coagulopathy, azotemia, hyperbilirubinemia, and elevated levels of hepatic enzymes and creatine kinase. Some, but not all, of these findings were observed more often in ISF strain-infected patients. CONCLUSIONS Although fatalities and similar clinical manifestations occurred among both groups of patients, the ISF strain was more virulent than the Malish strain. Multivariate analysis revealed that acute renal failure and hyperbilirubinemia were most strongly associated with a fatal outcome.

Intralesional Expression of mRNA of Interferon-γ, Tumor Necrosis Factor-α, Interleukin-10, Nitric Oxide Synthase, Indoleamine-2,3-Dioxygenase, and RANTES Is a Major Immune Effector in Mediterranean Spotted Fever Rickettsiosis

BACKGROUND The mechanisms of immunity to Rickettsia conorii that have been elucidated in mouse models have not been evaluated in human tissues. METHODS In this study, quantitative real-time polymerase chain reaction was used to determine the levels of expression of inflammatory and immune mediators in skin-biopsy samples collected from 23 untreated patients with Mediterranean spotted fever (MSF). RESULTS In all 23 patients, the levels of intralesional expression of mRNA of tumor necrosis factor (TNF)- alpha , interferon (IFN)- gamma , interleukin (IL)-10, RANTES, and indoleamine-2,3-dioxygenase (IDO), an enzyme involved in limiting rickettsial growth by tryptophan degradation, were higher than those in control subjects; 6 of the 23 patients had high levels of inducible nitric oxide synthase (iNOS), a source of microbicidal nitric oxide. Positive correlations between TNF- alpha , IFN- gamma , iNOS, IDO, and mild/moderate MSF suggest that type 1 polarization plays a protective role. Significantly higher levels of intralesional expression of IL-10 mRNA were inversely correlated with levels of intralesional expression of IFN- gamma mRNA and TNF- alpha mRNA. The mRNA-expression level of the chemokine RANTES was significantly higher in patients with severe MSF. CONCLUSION Mild/moderate MSF is associated with a strong and balanced intralesional proinflammatory and anti-inflammatory response, with a dominant type 1 immunity, whereas severe MSF is associated with increased expression of chemokine mRNA. Whether these factors are simply correlates of mild and severe MSF or contribute to antirickettsial immunity and pathogenesis remains to be determined.

The presence of eschars, but not greater severity, in portuguese patients infected with israeli spotted fever

Abstract: In Portugal, Mediterranean spotted fever (MSF) is caused by R. conorii Malish and Israeli spotted fever (ISF) strains. It has been suggested that the ISF strain isolated from patients with MSF causes different clinical manifestations compared to those caused by Malish strain, namely the absence of eschar and greater severity. The aim of this study was to analyze the presence or absence of eschar and of fatality in Portuguese patients infected with either Malish or ISF strain. Of 94 patients with a clinical diagnosis of MSF between 1994 to 2004, 47 were infected with Malish strain and 47 with ISF strain. Eschars were reported in 20 patients (49%) infected with Malish strain, and in 17 (39%) with ISF strain. The presence of eschar is not statistically associated to a greater extent with either R. conorii strain (P= 0.346). A total of 22 patients died, 9 infected with Malish strain and 13 infected with ISF strain, and no statistically significant difference was found (P= 0.330). This study showed that the concepts of absence of the eschar and greater severity in Israeli spotted fever infection should be revised.

The Burden of Imported Malaria in Portugal 2003 to 2012

Increasing international travel and expatriation to sub-Saharan countries where malaria is endemic has raised public health concerns about the burden of imported malaria cases in Portugal. From 2009 to 2012, there was a 60% increase in malaria hospitalizations, contradicting the declining trend observed since 2003. Older age was associated with longer length of stay in hospital and higher lethality.

Imported Malaria in Portugal 2000–2009: A Role for Hospital Statistics for Better Estimates and Surveillance

Background. Although eradicated in Portugal, malaria keeps taking its toll on travelers and migrants from endemic countries. Disease notification is mandatory but is compromised by underreporting. Methods. A retrospective study on malaria hospitalizations for 10 consecutive years (2000–2009) was conducted. Data on hospitalizations and notifications were obtained from Central Administration of Health System and Health Protection Agency, respectively. For data selection ICD-9 CM and ICD-10 were used: codes 084*, 647.4, and B50–B54. Variables were gender, age, agent and origin of infection, length of stay (LOS), lethality, and comorbidities. Analysis included description, hypothesis testing, and regression. Results. There were 2003 malaria hospitalizations and 480 notified hospitalized cases, mainly in young male adults. P. falciparum was the main agent of infection acquired mainly in sub-Saharan Africa. Lethality was 1.95% and mean LOS was 8.09 days. Older age entailed longer LOS and increased lethality. Discussion. From 2000 to 2009, there were 2003 malaria hospitalizations with decreasing annual incidence, these numbers being remarkably higher than those notified. The national database of diagnosis related groups, reflecting hospitalizations on NHS hospitals, may be an unexplored complementary source for better estimates on imported malaria.

Psychological well-being of Portuguese expatriates in Sub-Saharan Africa: a cross-sectional study

Background Psychological health problems are highlighted among the most relevant disease patterns in expatriates. The purpose of this study was to determine the psychological well-being in Portuguese expatriates in Angola and Mozambique, considering the increasing expatriation wave. Methods A cross-sectional self-administered web survey was conducted in a sample of 352 Portuguese civil expatriates in Angola and Mozambique. Clinically significant psychological distress was determined using General Health Questionnaire (GHQ)-12 and associated factors were studied using multiple logistic regression analysis. Results GHQ-12 items showed good internal consistency as reflected by the Cronbachs alpha. One-third of the screened expatriates corresponded to cases of clinically significant psychological distress. Age, country of birth, self-reported psychological symptoms and self-perception of general health in the previous 3 months were identified as independent variables associated with psychological distress. Conclusions Increasing awareness and monitoring expatriates mental health should be in the health agenda, furthermore considering them a risk group in need of evidence-based mental health expatriate preparedness. The use of user-friendly validated tools, such as GHQ-12, allowing objective assessment and surveillance of these hard to reach populations should be reinforced.

Surveillance of imported hospital requiring malaria in Portugal: can it be improved?

Although eradicated in Portugal, malaria keeps taking its toll on travellers and migrants from endemic countries. Completeness of hospital requiring malaria notification in Portugal 2000-11 was estimated, using two-source capture-recapture method. Data sources were: national surveillance database of notifiable diseases and the national database of the Diagnosis-Related Groups resulting from National Health Service (NHS) hospital episodes. The completeness of notification was 21,2% for all malaria cases and 26,5% for malaria deaths, indicating significant underreporting and urging for complementary data source in surveillance, for disease burden estimates and retrospective monitoring, namely hospital episodes statistics.

Acne and Psychological Characteristics

In psychotherapeutic clinic, patients without marks of acne report this experience with a great emotional charge; this fact prompted us to have an interest in identifying what makes acne experience to be lived as a trauma. Observation, reflection and bibliographical review led us to affirm that, in individuals with acne, it is expected to find: decrease in the quality of dermatological life; increasing levels of depression, anxiety and/or stress; strategies of coping adapted to the problem situation, acne; disturbance in the capacity for symbolizing and modulating affective experiences (a characteristic of alexithymic individuals). In study I we used a qualitative approach: 45 semi-structured interviews to patients with/or who had acne and to 30 health care professionals. Content analysis enabled the construction of the ICA – Inventory of beliefs and behaviors about Acne and its treatment. In study II we applied a quantitative methodology to a pilot sample (N=367), with a protocol that includes a preliminary version of ICA and the IQV-D, Brief Code, EADS 21 and TAS-20. This application justified the restructuring of the protocol applied in study III with university students (N=1666). In study IV took part 95 dermatologists: they answered the questions on acne beliefs in ICA. These were compared with the data of studies II and III. In study V a comparative analysis of the different studies will be made. The analysis of the results of Studies II and III points to the existence of a relationship between having acne, psychological condition and the individual behaviors.