The outbreak has led to fines being imposed in major cities and the quarantine of over 1,000 as the outbreak spread across Los Angeles universities.In fact, according to the latest CDC numbers, the number of measles cases registered four months into 2019 has surpassed the count of cases from last decade.All new cases since the eradication declaration have come from foreign travelers.

On Monday, the CDC on Monday is due to release the latest updated figures on the number of cases recorded so far this year. Here are key facts about the outbreak:

Public health officials blame the measles resurgence on the spread of misinformation about vaccines. A vocal group of parents opposes vaccines, believing that ingredients in them can cause autism. Social networks have resorted to censorship to prevent the spread of any related postings.