It is spelled out exactly in the "Travel Requiements" section of the EHAS website, under section "General Requirements" #'s 5 & 6. I have copied those 2 sections below and pasted a link to the appropriate page. I can't give you a definitive answer to your question without knowing your travel date, but the simple answer is if you two are traveling prior to the anniversary of the "completed" first vaccination than under current regulations you would not need boosters.


5). All fully vaccinated travelers from a high risk country to Sint Maarten are exempted from a COVID-19 test. The completed vaccination date cannot be older than one year, unless a booster shot has been administered before the ending of the one year term. The EHAS application must still be completed. The date of completion of vaccination must be submitted as well as valid proof of vaccination (official country vaccination card or QR code, full name and name, dates administered and batch number(s) of vaccine) from the country where the vaccine was administered. A received booster shot must be indicated in the appropriate field and proof thereof must be uploaded as well.

6). You are considered fully vaccinated with an accepted vaccine :
2 weeks after the second dose in a 2-dose series, such as the Pfizer, Moderna, Astrazeneca, Sinopharm, Sinovac/Coronavac and Covishield vaccines, or
2 weeks after a single-dose vaccine, such as Johnson & Johnson/Janssen vaccine, or
2 weeks after the second dose in a 2-dose series combination of a single dose Pfizer or Moderna with a single dose Astra Zeneca, or
2 weeks after a single-dose of vaccine after a confirmed COVID-19 infection within 6 months before the vaccination (to be stated on proof of vaccination in absence of a digital COVID-19 infection certificate).
the accepted Covid-19 vaccines are: Comirnaty (Pfizer), Spikevax (Moderna), Vaxzevria (Astrazeneca), Johnson & Johnson/Janssen, Covishield (Astrazeneca), Sinopharm and Sinovac/CoronaVac.

EHAS - Travel Requirements


Pay attention to the blue highlighted text and you will have your answer.