COVID-19 Confirmed Cases by US County (from John's Hopkins Dataset)

2020-03-08-report.txt

# COVID-19 by US County
Colorado (20):
  El Paso: 2
  Denver: 6
  Summit: 6
  Douglas: 6

Oregon (37):
  Washington: 23
  Jackson: 3
  Klamath: 2
  Douglas: 1
  Marion: 1
  Umatilla: 7

Nevada (9):
  Clark: 5
  Washoe: 4

New York (255):
  Ulster: 1
  Westchester: 188
  New York: 46
  Nassau: 11
  Rockland: 4
  Saratoga: 4
  Suffolk: 1

Pennsylvania (10):
  Delaware: 3
  Wayne: 3
  Montgomery: 4

Connecticut (3):
  Fairfield: 3

Hawaii (2):
  Honolulu: 2

Oklahoma (2):
  Tulsa: 2

Missouri (1):
  St. Louis: 1

Wisconsin (33):
  Dane: 33

Nebraska (36):
  Douglas: 36

New Jersey (13):
  Bergen: 12
  Hudson: 1

Kentucky (3):
  Fayette: 3

Virginia (2):
  Fairfax: 2

Kansas (1):
  Johnson: 1

Texas (57):
  Montgomery: 0
  Bexar: 31
  Harris: 15
  Fort Bend: 11

Arizona (52):
  Maricopa: 48
  Pinal: 4

Indiana (4):
  Marion: 3
  Hendricks: 1

Minnesota (3):
  Ramsey: 3

Utah (2):
  Davis: 2

District of Columbia (2):
  District of Columbia: 2

Illinois (105):
  Cook: 105

New Hampshire (17):
  Grafton: 15
  Rockingham: 2

Maryland (11):
  Montgomery: 10
  Harford: 1

Rhode Island (17):
  Providence: 17

South Carolina (4):
  Charleston: 2
  Kershaw: 2

Vermont (1):
  Washington: 1

Georgia (21):
  Cobb: 2
  Polk: 5
  Fulton: 14

Tennessee (6):
  Williamson: 4
  Davidson: 1
  Shelby: 1

Florida (35):
  Volusia: 1
  Hillsborough: 13
  Sarasota: 7
  Santa Rosa: 4
  Broward: 4
  Lee: 4
  Manatee: 1
  Okaloosa: 1

North Carolina (9):
  Wake: 6
  Chatham: 3

Massachusetts (75):
  Norfolk: 13
  Suffolk: 48
  Middlesex: 10
  Plymouth: 3
  Berkshire: 1

Washington (528):
  Spokane: 1
  Snohomish: 116
  Chelan: 15
  Clark: 2
  Jefferson: 2
  Pierce: 5
  King: 382
  Grant: 4
  Kittitas: 1

California (636):
  Los Angeles: 97
  Sacramento: 28
  San Francisco: 22
  Fresno: 1
  Solano: 15
  Placer: 21
  Sonoma: 7
  Santa Clara: 202
  San Diego: 56
  Humboldt: 17
  San Mateo: 13
  Yolo: 3
  Alameda: 8
  Madera: 2
  San Benito: 70
  Orange: 53
  Contra Costa: 20
  Riverside: 1

covid-19-us-counties.go

package main

import (
	"encoding/csv"
	"encoding/json"
	"fmt"
	"io"
	"io/ioutil"
	"log"
	"net/http"
	"strconv"
)

const (
	statsURL = "https://raw.githubusercontent.com/CSSEGISandData/COVID-19/master/csse_covid_19_data/csse_covid_19_time_series/time_series_19-covid-Confirmed.csv"
	fccURL   = "https://geo.fcc.gov/api/census/block/find?latitude=%v&longitude=%v&format=json"

	colState   = 0
	colCountry = 1
	colLat     = 2
	colLon     = 3

	firstDataColumn = 4
)

type FCCData struct {
	County FCCCounty
	State  FCCState
	Status string
}

type FCCCounty struct {
	Name string
}

type FCCState struct {
	Code string
	Name string
}

func LookupFCCData(lat, lon float64) *FCCData {
	resp, err := http.Get(fmt.Sprintf(fccURL, lat, lon))
	if err != nil {
		panic(err)
	}

	defer resp.Body.Close()
	data, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		panic(err)
	}

	out := new(FCCData)
	err = json.Unmarshal(data, out)
	if err != nil {
		panic(err)
	}

	return out
}

func main() {
	resp, err := http.Get(statsURL)
	if err != nil {
		panic(err)
	}

	defer resp.Body.Close()

	r := csv.NewReader(resp.Body)
	r.ReuseRecord = true

	perStateCounty := map[string]map[string]int{}
	perState := map[string]int{}

	line := 0
	for {
		line++

		record, err := r.Read()
		if err == io.EOF {
			break
		}

		if err != nil {
			log.Fatal(err)
		}

		if line == 1 {
			continue
		}

		if record[colCountry] != "US" {
			continue
		}

		lat, err := strconv.ParseFloat(record[colLat], 64)
		if err != nil {
			panic(err)
		}

		lon, err := strconv.ParseFloat(record[colLon], 64)
		if err != nil {
			panic(err)
		}

		geo := LookupFCCData(lat, lon)
		if geo.State.Name == "" {
			continue
		}

		if _, ok := perState[geo.State.Name]; !ok {
			perState[geo.State.Name] = 0
		}

		if _, ok := perStateCounty[geo.State.Name]; !ok {
			perStateCounty[geo.State.Name] = map[string]int{}
		}

		if _, ok := perStateCounty[geo.State.Name][geo.County.Name]; !ok {
			perStateCounty[geo.State.Name][geo.County.Name] = 0
		}

		for _, val := range record[firstDataColumn:] {
			v, err := strconv.Atoi(val)
			if err != nil {
				panic(err)
			}

			perState[geo.State.Name] += v
			perStateCounty[geo.State.Name][geo.County.Name] += v
		}

	}

	fmt.Println("# COVID-19 by US County")
	for state, perCounty := range perStateCounty {
		fmt.Printf("%s (%v):\n", state, perState[state])
		for county, v := range perCounty {
			fmt.Printf("  %s: %v\n", county, v)
		}
		fmt.Println("")
	}

}