Should you answer 'yes' or 'no' to the yellow fever question on the DTAC or THIM app if you haven't traveled to affected countries?

Users discuss how to respond to the yellow fever question in the DTAC or THIM app. The consensus is that if you haven't visited any country with yellow fever, you should answer 'no.' Leaving the answer blank is not an option, as it would render the form incomplete. Some comments emphasize the importance of providing accurate information based on travel history, while others clarify that a certificate of vaccination may be required if 'yes' is answered.