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Published on: March 9, 2018
Serious fungal infections in Portugal
R Sabino1, C Verissímo2, J Brandão2
1Infectious Diseases Department, National Institute of Health Dr. Ricardo Jorge-Reference Unit for Parasitic and Fungal Infections, Lisbon, Portugal. raquel.sabino@insa.min-saude.pt.
Abstract:
There is a lack of knowledge on the epidemiology of fungal infections worldwide because there are no reporting obligations. The aim of this study was to estimate the burden of fungal disease in Portugal as part of a global fungal burden project. Most published epidemiology papers reporting fungal infection rates from Portugal were identified. Where no data existed, specific populations at risk and fungal infection frequencies in those populations were used in order to estimate national incidence or prevalence, depending on the condition. An estimated 1,510,391 persons develop a skin or nail fungal infection each year. The second most common fungal infection in Portugal is recurrent vulvovaginal candidiasis, with an estimated 150,700 women (15-50 years of age) suffering from it every year. In human immunodeficiency virus (HIV)-infected people, oral or oesophageal candidiasis rates were estimated to be 19.5 and 16.8/100,000, respectively. Candidaemia affects 2.19/100,000 patients, in a total of 231 cases nationally. Invasive aspergillosis is less common than in other countries as chronic obstructive pulmonary disease (COPD) is uncommon in Portugal, a total of 240 cases annually. The estimated prevalence of chronic pulmonary aspergillosis after tuberculosis (TB) is 194 cases, whereas its prevalence for all underlying pulmonary conditions was 776 patients. Asthma is common (10% in adults) and we estimate 16,614 and 12,600 people with severe asthma with fungal sensitisation and allergic bronchopulmonary aspergillosis, respectively. Sixty-five patients develop Pneumocystis pneumonia in acquired immune deficiency syndrome (AIDS) and 13 develop cryptococcosis. Overall, we estimate a total number of 1,695,514 fungal infections starting each year in Portugal.
Insights
Fungal infections in Portugal cause over 1.6 million infections annually, with skin and nail conditions being most common. This study estimates the burden of various fungal diseases, including candidiasis and aspergillosis, to improve understanding of their epidemiology.
Area of Science:
- Medical Mycology
- Epidemiology
- Infectious Diseases
Background:
- Fungal infection epidemiology is poorly understood globally due to a lack of mandatory reporting.
- Portugal's specific burden of fungal diseases has not been comprehensively estimated.
- This study contributes to a global initiative to quantify the impact of fungal diseases.
Purpose of the Study:
- To estimate the annual incidence and prevalence of fungal infections in Portugal.
- To identify the most common fungal diseases and populations at risk.
- To provide data for public health strategies and resource allocation for fungal disease management.
Main Methods:
- Systematic review of published epidemiological data on fungal infections in Portugal.
- Estimation of national incidence/prevalence using data from at-risk populations where direct data was absent.
- Inclusion of common fungal infections like skin/nail infections, candidiasis, aspergillosis, and Pneumocystis pneumonia.
Main Results:
- An estimated 1,695,514 fungal infections occur annually in Portugal.
- Skin and nail fungal infections are most prevalent, affecting approximately 1,510,391 individuals yearly.
- Other significant burdens include recurrent vulvovaginal candidiasis (150,700 women), candidemia (231 cases), and fungal-related asthma complications (16,614 severe asthma with fungal sensitization).
Conclusions:
- Fungal infections represent a substantial public health issue in Portugal, with a high annual burden.
- Targeted interventions and improved surveillance are needed, particularly for common conditions like skin/nail infections and vulvovaginal candidiasis.
- Further research into the epidemiology of less common but severe fungal infections like invasive aspergillosis and Pneumocystis pneumonia is warranted.
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