Staphylococcus aureus positive skin infections and international travel

Philipp Zanger1

  • 1Institut für Tropenmedizin, Universität Tübingen, Tübingen, Germany. philipp.zanger@med.uni-tuebingen.de

Insights

Travelers returning from tropical regions often develop Staphylococcus aureus skin infections. This review examines bacterial virulence, host defenses, and the rise of antibiotic-resistant strains like community-acquired methicillin-resistant Staphylococcus aureus.

Area of Science:

  • Infectious Diseases
  • Microbiology
  • Dermatology

Background:

  • Staphylococcus aureus is a common cause of skin infections in travelers returning from tropical and subtropical areas.
  • Recent research has focused on bacterial virulence and host defense mechanisms against S. aureus.
  • The emergence of antibiotic-resistant strains, particularly community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA), is a growing concern.

Purpose of the Study:

  • To review current knowledge on travel-related S. aureus skin infections.
  • To discuss recent findings on bacterial pathogenicity and innate immune defense mechanisms.
  • To explore the role of specific virulence factors and antimicrobial peptides in these infections.

Main Methods:

  • Literature review of recent findings on S. aureus pathogenicity.
  • Analysis of mechanisms of innate defense against S. aureus.
  • Summary of conflicting data on travel, migration, and CA-MRSA emergence.

Main Results:

  • S. aureus is a frequent cause of skin infections in travelers returning from the tropics.
  • Panton-Valentine leukocidin and antimicrobial peptides play potential roles in infection evolution.
  • Conflicting evidence exists regarding the association between travel/migration and the global rise of CA-MRSA.

Conclusions:

  • Further research is needed to understand travel-related S. aureus skin infections.
  • Clarifying the link between travel, migration, and CA-MRSA emergence requires more investigation.
  • Understanding bacterial and host factors is crucial for managing these infections.

Related Concept Videos

Staphylococcal Skin Infections01:29

Staphylococcal Skin Infections

Staphylococcus aureus is a Gram-positive coccus that resides harmlessly on the skin and mucous membranes of healthy individuals. When the skin barrier is breached, it can shift from a commensal to an opportunistic pathogen. This transition is facilitated by surface adhesins, such as clumping factor B and S. aureus surface protein G (SasG), which bind to structural proteins, including loricrin and cytokeratin, in the damaged epidermis. Protein A, another key factor, binds the Fc region of...
Skin Diseases and Disorders01:23

Skin Diseases and Disorders

Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the skin and other body systems. These conditions can affect people of all ages and may have different causes, including genetic factors, infections, autoimmune reactions, environmental factors, and lifestyle choices.
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
Clinical Significance of Antibiotic Resistance01:25

Clinical Significance of Antibiotic Resistance

Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within the One...
Healthcare Associated Infections I: Iatrogenic, Exogenic and Endogenic01:26

Healthcare Associated Infections I: Iatrogenic, Exogenic and Endogenic

Healthcare-associated infections (HAIs) occur in a healthcare facility while a person receives care for another ailment. This category also includes work-related infections among healthcare staff.
HAIs significantly increase the cost of health care. Extended stays in healthcare institutions, increased disability, increased costs of medications, including specialized antibiotics, and prolonged recovery times add to the patient's expenses and the healthcare institution and funding bodies. Common...
The Skin Microbiota01:27

The Skin Microbiota

The human skin serves as a complex ecosystem inhabited by a diverse community of microorganisms, including bacteria, fungi, and viruses. This microbiome plays a critical role in maintaining skin health and defending against pathogenic invaders. The composition of microbial communities varies significantly across different regions of the body, influenced primarily by the local levels of moisture and sebum.Regional Variation in Skin MicrobiotaCutibacterium acnes predominantly colonizes sebaceous...
Infection01:20

Infection

When a pathogen enters the body and reproduces, it can cause an infection, damage body cells, and cause illness symptoms that eventually lead to disease. Therefore, its prevention requires breaking the chain of infection.
The chain begins with pathogens: bacteria, viruses, fungi, prions, or parasites such as protozoa helminths. These can be present on the skin as transient or resident flora, or they can be acquired from the environment. Identifying and treating the type of infection and...