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Table 1 Risk and vulnerability factors affecting the component terms of R0 in HIV epidemiology among migrants

From: Restricted access to antiretroviral treatment for undocumented migrants: a bottle neck to control the HIV epidemic in the EU/EEA

Term

Definition

Factors affecting the term

Intervention to reduce the term’s value

β

Transmission efficiency

Self-perceived risk

Access to HIV information

Condom availability and use

HIV prevention and risk reduction strategies

Sexual practices

Exposure to sexual violence

Stigma

Discrimination

Disclosure

STI co-infections

Access to STI care and treatment services

Detectable viral load

ART provision

c

Contact rate

Number of partners

HIV prevention and risk reduction strategies

Mixing patterns

Size of core group

D

Duration of infectivity

Natural history of infection

Early diagnosis

Diagnostic interventions

Access to HIV testing services

Therapeutic interventions

ART provision

Socio-economic deprivation

Societal interventions