Serological Vulnerability and Active Infection Detection Among Recently Arrived Migrants in Spain: Results from a...

Area of Science:

• Public Health
• Infectious Diseases
• Migrant Health

Background:

• Newly arrived migrants face elevated risks for communicable diseases due to low immunization coverage and limited healthcare access.
• Challenging migration trajectories further exacerbate health vulnerabilities in this population.
• This study addresses the need for targeted public health interventions for recently arrived migrants.

Purpose of the Study:

• To describe the implementation and outcomes of a novel one-stop public health intervention.
• To assess serological screening and accelerated vaccination strategies in recently arrived migrants.
• To identify immunization gaps and detect active infections within this vulnerable group.

Main Methods:

• A cross-sectional descriptive study was conducted with 335 adult migrants from sub-Saharan Africa in Galicia, Spain.
• A mobile health unit offered point-of-care screening for vaccine-preventable diseases (measles, mumps, rubella, varicella, hepatitis A) and active infections (hepatitis B, syphilis).
• An accelerated immunization schedule was provided, alongside data collection on sociodemographic and clinical factors.

Main Results:

• A high participation rate (99.7%) was achieved.
• Significant susceptibility to vaccine-preventable diseases was observed, notably hepatitis B (36.4%), measles (22.7%), and varicella (16.4%).
• Active infections were detected in 12.9% of participants, including hepatitis B (9.9%) and syphilis (3.0%).

Conclusions:

• Substantial immunization deficits and undiagnosed infections exist in vulnerable migrant populations.
• Centralized, culturally adapted screening and accelerated vaccination programs are feasible and effective.
• Integration into national health systems is recommended to ensure health equity and reduce disease transmission.