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

2020-03-10-report.txt

# COVID-19 by US County
Arizona (6):
  Maricopa: 2
  Pima: 1
  Pinal: 3

California (145):
  Alameda: 3
  Contra Costa: 9
  Fresno: 1
  Humboldt: 1
  Los Angeles: 20
  Madera: 1
  Napa: 1
  Orange: 5
  Placer: 7
  Riverside: 4
  Sacramento: 10
  San Benito: 2
  San Diego: 3
  San Francisco: 15
  San Mateo: 9
  Santa Clara: 43
  Santa Cruz: 2
  Shasta: 1
  Solano: 3
  Sonoma: 3
  Ventura: 1
  Yolo: 1

Colorado (15):
  Arapahoe: 2
  Denver: 3
  Douglas: 3
  Eagle: 2
  El Paso: 1
  Gunnison: 1
  Larimer: 2
  Summit: 1

Connecticut (1):
  Fairfield: 1

District of Columbia (5):
  District of Columbia: 5

Florida (16):
  Broward: 5
  Charlotte: 1
  Hillsborough: 2
  Lee: 2
  Manatee: 2
  Okaloosa: 1
  Santa Rosa: 1
  Volusia: 2

Georgia (16):
  Cherokee: 1
  Cobb: 4
  DeKalb: 2
  Fayette: 1
  Fulton: 5
  Gwinnett: 2
  Polk: 1

Hawaii (1):
  Honolulu: 1

Illinois (12):
  Cook: 11
  Kane: 1

Indiana (5):
  Boone: 1
  Hendricks: 2
  Marion: 1
  Noble: 1

Iowa (8):
  Johnson: 7
  Pottawattamie: 1

Kansas (1):
  Johnson: 1

Kentucky (6):
  Fayette: 2
  Floyd: 1
  Harrison: 2
  Jefferson: 1

Louisiana (1):
  Jefferson: 1

Maryland (8):
  Harford: 1
  Montgomery: 4
  Prince George's: 3

Massachusetts (41):
  Berkshire: 5
  Middlesex: 15
  Norfolk: 10
  Suffolk: 10
  Worcester: 1

Minnesota (2):
  Carver: 1
  Ramsey: 1

Missouri (1):
  St. Louis: 1

Nebraska (3):
  Douglas: 3

Nevada (4):
  Clark: 2
  Washoe: 2

New Hampshire (4):
  Grafton: 3
  Rockingham: 1

New Jersey (15):
  Bergen: 7
  Burlington: 2
  Camden: 1
  Hudson: 1
  Monmouth: 2
  Passaic: 1
  Union: 1

New York (150):
  Nassau: 19
  New York: 25
  Rockland: 4
  Saratoga: 2
  Suffolk: 1
  Ulster: 1
  Westchester: 98

North Carolina (7):
  Chatham: 1
  Wake: 6

Ohio (3):
  Cuyahoga: 3

Oklahoma (2):
  Tulsa: 2

Oregon (14):
  Douglas: 1
  Jackson: 2
  Klamath: 1
  Marion: 1
  Umatilla: 1
  Washington: 8

Pennsylvania (13):
  Adams: 1
  Delaware: 1
  Monroe: 1
  Montgomery: 8
  Philadelphia: 1
  Wayne: 1

Rhode Island (3):
  Providence: 3

South Carolina (7):
  Charleston: 1
  Kershaw: 5
  Spartanburg: 1

Tennessee (3):
  Davidson: 1
  Shelby: 1
  Williamson: 1

Texas (16):
  Collin: 3
  Fort Bend: 6
  Gregg: 1
  Harris: 6

Utah (2):
  Davis: 1
  Weber: 1

Vermont (1):
  Bennington: 1

Virginia (9):
  Arlington: 1
  Fairfax: 4
  Loudoun: 1
  Norfolk City: 2
  Spotsylvania: 1

Washington (162):
  Clark: 1
  Grant: 1
  Jefferson: 1
  King: 116
  Kitsap: 1
  Kittitas: 1
  Pierce: 4
  Snohomish: 37

Wisconsin (3):
  Dane: 2
  Pierce: 1

covid-19-us-counties.go

package main

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

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
		}

		if !strings.Contains(record[colState], ",") {
			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
		}

		// Iterate the record in reverse to find the most recent count
		for i := len(record) - 1; i > firstDataColumn; i-- {
			v, err := strconv.Atoi(record[i])
			if err != nil {
				continue
			}

			if v == 0 {
				break
			}

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

	// fmt.Println("# COVID-19 by US State")
	// for state, v := range perState {
	// 	fmt.Printf("%s: %v\n", state, v)
	// }
	// fmt.Println("")

	statesLookup := []string{}
	countiesLookup := map[string][]string{}
	for state, perCounty := range perStateCounty {

		if perState[state] == 0 {
			continue
		}

		statesLookup = append(statesLookup, state)

		counties := []string{}
		for county, v := range perCounty {

			if v == 0 {
				continue
			}

			counties = append(counties, county)
		}

		sort.Strings(counties)
		countiesLookup[state] = counties
	}
	sort.Strings(statesLookup)

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

}