People in American Samoa have been urged to take part in a Zika Action Day this weekend to learn more about staying free of the virus.
The activities on Saturday morning in Pago Pago include information sessions and health screening for pregnant women.
The day is being organised by the Department of Health and the US Centers for Disease Control and Prevention (CDC).
A specialist with the CDC, Loretta Jackson Brown, said the authorities continue to monitor pregnant women for the disease which can cause abnormal head development in babies.
"We don't know the attack rate of mothers who get Zika and then their babies have microcephaly. CDC is still learning more about that."
"We still want to keep that awareness and we want to still have those health protective behaviours and encourage mothers and other Samoans to practice health behaviours that help prevent Zika."
Dr Jackson Brown said people will learn more about ways to keep Zika free.
Health authorities in American Samoa have been promoting what they call "the three Ds" since the first cases of the mosquito-borne disease were recorded six months ago.
This involves draining water, dressing appropriately and using insect repellant that contains Deet.
There were 52 confirmed cases in the territory on September 15, including 21 pregnant women.