The vaccination certificate is necessary to enter and leave Paraguay. The World Health Organization (WHO) has established that a single dose of yellow fever vaccine provides lifelong immunity.

“Any foreign person, not resident in Paraguay, coming from a risk area, must present the international certificate of vaccination against yellow fever to enter Paraguay,” the authorities ...

In the 20th century, a vaccine for yellow fever was developed to protect people in regions where the disease still flourishes. Epidemics continued, however, during every decade of the century ...

Yellow fever vaccination is mandatory for travel to 43 countries, including Kenya, Egypt, Algeria, Ghana, Nigeria, and Ethiopia. A vaccination certificate is a prerequisite for obtaining a visa to ...

“No one told us to have the certificate only to reach here and ... Wednesday, public health officers at the border said the yellow fever vaccine had run out but they had requested for more ...

Fifteen healthy young adults were vaccinated with the standard 17-D vaccine strain of yellow-fever virus (National Drug Company). After reconstitution of the lyophilized material 0.5 ml.