But that option may be disappearing. Jason Schreier, the chief executive of APRIL Travel Protection, a travel insurance company with yearly sales of more than $1.1 billion, said that his company’s sales of cancel-for-any-reason insurance had jumped 275% since the outbreak began. As of last week, APRIL stopped selling the upgraded policies after its underwriters required the company to pull them from the market, saying that it was not meant to cover such a concentrated risk among travelers.