According to a fact sheet published on Nov. 8 by the Treasury Department, individual travel will still be allowed within 12 categories, including humanitarian and religious travel; family visits; journalistic activity; professional research; and participation in public performances, clinics, workshops, athletic and other competitions.

Those traveling in these categories will still be able to book a flight and reserve a room online and they will not be required to apply for a specific license. However, they should pursue the activity in Cuba for which their license is granted, whether it be helping a religious group or bringing humanitarian aid, and keep records of their visit for the requisite five years.

What was the State Department’s travel advisory? The State Department in September warned Americans not to travel to Cuba after an alleged series of sonic attacks against United States personnel. Those hurt by the attacks had suffered a variety of symptoms, including hearing loss, brain injury and headaches.

Travel organizers have questioned the dangers posed by the attacks and say the warning has sown confusion. Michael Sykes, the president of Cuba Cultural Travel, said many travelers were “misinterpreting” the State Department warning to mean that they would not be able to get a visa.

Colin Laverty, the president of Cuba Educational Travel, said the advisory was unwarranted. “The U.S. government has a responsibility to make clear to U.S. travelers that Cuba continues to be safe, that these are isolated incidents and there is no risk to Americans traveling to Cuba,” he said.

Do Americans have to heed the travel warning? No. Travel warnings should be taken into account, but are not binding.

What if I need help when I am in Cuba? The State Department has said that, because of a reduction in personnel in Havana, it will be able to help Americans only in emergencies. The government provides emergency telephone numbers and information here.