The number of people who are getting transmitted diseases has more than tripled in the United States in recent years.

Federal health officials reported that the number of people who get diseases transmitted by such as mosquito, tick and flea bites has more than tripled in the United States.

And since 2004, at least nine such diseases have been newly discovered or introduced into the United States, as reported by Dr. Lyle R. Petersen, the Centers for Disease Control and Prevention director of vector-borne diseases.

He emphasized that many factors are at work while saying that “the numbers on some of these diseases have gone to astronomical levels.”

The report said that between 2004 and 2016, about 643,000 cases of 16 insect-borne illnesses were reported to the C.D.C. — starting with 27,000 a year in 2004, and rising to 96,000 by 2016. (The year 2004 was when the agency began requiring more detailed reporting.)

But the real case numbers were undoubtedly far larger, Dr. Petersen said. For example, the C.D.C. estimates that about 300,000 Americans get Lyme disease each year, but only about 35,000 diagnoses are reported.

As to the reasons for the three-fold increase they said, “It’s a complicated, multidimensional system” meaning that a range of factors were involved, such as warmer climate, expanded and faster human travel, and a severe lack of new vaccines.

Pestilence was a specific sign called out by Jesus Christ in His prophecies of the Last Days in Matthew the 24th chapter.

You can learn more about this sign of pestilence and other Signs of the Last Days prophecies here.