The number of coronavirus cases in the United States has reached 1,000, according to a CNN tally. The number of patients identified has doubled since Sunday.
Thirty-one people have died.
Washington state remains the hardest-hit, with 273 patients and 24 fatalities. California and New York are the only other states with more than 100 cases, while Massachusetts is getting closer with 92. See here for a state-by-state breakdown.
You should know: While the numbers are noteworthy, they do not come as a complete surprise. Viral outbreaks often increase exponentially -- not linearly or logarithmically -- if there is no immunization or cure because one patient can infect several others. That is why public health officials are stressing the importance of contact tracing in stopping the coronavirus' spread.