Coronavirus cases in tri-state (NY,NJ,PA) region

JHU worldwide coronoavirus map, US and Canada,

Tri-state data search , NY,NJ,PA county and state cases EXCEL file

	cases
	New York	New Jersey	Pennsylvania
4/1/2020	83712	22255	5,805
increase from 3/31/2020	7,917	3,559	962
	deaths
	New York	New Jersey	Pennsylvania
4/1/2020	2219	355	74
increase from 3/31/2020	669	88	11

It seems masks do protect you. Wear masks when you go to public places.

1. When will the daily addition start to decline in tri-state area? When will the tri-state cases peak?

Based on the DIR (daily increase ratio or diagnosed incidence ratio) trend in NY, DIR will be 1 (see underneath plot) around 4/4/2020. If average status of a diagnosed person lasts 3 weeks, NY coronavirus case will peak around (4+21) 4/25. i.e., there will be more decrease in cases than increase after that. If it lasts 4 weeks, NY case will peak around 5/2/2020. However, trends for NJ and PA are not clear.

Trend of DIR for NY seems reaching 1 on 4/4/2020	Trend of DIR for NJ is not clear
Trend of DIR for PA is not clear	DIR: ratio of diagnosed accumulation of a given day to the diagnosed accumulation of the prior day

2. County distribution map and NJ county trends (Tri_state_corona.pdf)

3. Tristate coronavirus case trend

Data sources links

Pennsylvania Department of Health, New Jersey Department of Health. New York Department of Health

Last updated: 4/1/2020. Hongbing Sun , GEMS department, Rider University