The inability to control the West African Ebola outbreak
has led to debate around the mode of transmission of EV,
with some public health agencies suggesting aerosol
transmission (Murray et al., 2010). Current evidence
suggests that human to human transmission occurs
predominantly though direct contact with blood and body
secretions,(World Health Organization (WHO), 2014a) and
this is the basis of the WHO and the CDC recommendations
for facemasks to protect HCWs from EVD.