Carnival Cruise Line is canceling and delaying more U.S. trips at a time when new cases of COVID-19 are averaging about 170,000 per day in the country amid a jumbled rollout of vaccines. Carnival’s planned seasonal service out of San Diego has been suspended until further notice, and cruises scheduled through April 2023 were canceled. Some trips from California to Hawaii will continue, but will sail from Long Beach instead, the company said. Carnival began warning travelers of cancellations on Friday. Trips that were planned on three ships — the Magic, Paradise and Valor — are being delayed until November, the cruise line said. “Like so much about this current global situation, we are adapting our plans as circumstances evolve and we are able to confirm alternatives,” Carnival Cruise Line President Christine Duffy said in a prepared statement Monday. Shares in Miami-based Carnival Corp. shares dropped 5% on Monday. […]