The New Zealand Government is offering financial support to Pacific nations with cases of swine flu as well as stocks of the drug Tamiflu.
Prime Minister John Key is in Samoa, where there are three isolated cases of the H1N1 virus.
On arrival at Faleolo Airport in Apia on Wednesday, all members of the Prime Minister's delegation were screened before being allowed to get off the plane.
Mr Key says New Zealand will help Samoa deal with the virus, including providing Tamiflu if needed, and the offer would be extended to any country in the region in need of assistance.
Mr Key says he is confident that sharing New Zealand stocks of Tamiflu will not run down domestic supplies, as the population numbers in the Pacific are relatively low.