Intention to receive a vaccine against SARS-CoV-2 in Italy and its association with trust, worry and beliefs about the origin of the virus.

The aim of the current study was to determine the extent to which Italian people intend to receive a vaccine against SARS-CoV-2 and to investigate its associations with worry, institutional trust and beliefs about the non-natural origin of the virus. A sample of 624 people living in Italy was recruited in April 2020 using an online platform. The survey included questions about intention to receive a vaccine against SARS-CoV-2, trust, worry and beliefs about the origin of the virus. Most respondents (75.8%) intended to receive a vaccine, while 32 (5.1%) and 63 (10.1%) participants responded 'No' and 'I do not know', respectively. The remaining participants (9.0%) chose not to respond to this question. Controlling for socio-demographic factors, a multinomial logistic regression model revealed that no intention to receive a vaccine was associated with lower levels of worry and institutional trust, while increased odds for responding 'do not know' were found among participants holding beliefs about the non-natural origin of the virus. Vaccine acceptance may not be sufficient to establish a high level of herd immunity and a successful implementation of new pandemic vaccination programs should take into account trust, conspiracy beliefs and worry.