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

2020-03-15-report.txt

# COVID-19 by US County
Arizona (13):
  Maricopa: 2
  Pinal: 2
  [unknown]: 9

California (426):
  Alameda: 2
  Contra Costa: 9
  Fresno: 1
  Humboldt: 1
  Los Angeles: 14
  Madera: 1
  Orange: 4
  Placer: 7
  Riverside: 1
  Sacramento: 2
  San Benito: 2
  San Diego: 3
  San Francisco: 9
  San Mateo: 2
  Santa Clara: 38
  Shasta: 1
  Sonoma: 3
  Yolo: 1
  [unknown]: 325

Colorado (131):
  Denver: 2
  Douglas: 3
  El Paso: 1
  Summit: 1
  [unknown]: 124

District of Columbia (16):
  District of Columbia: 2
  [unknown]: 14

Florida (115):
  Broward: 3
  Charlotte: 1
  Hillsborough: 2
  Lee: 2
  Manatee: 2
  Okaloosa: 1
  Santa Rosa: 1
  Volusia: 1
  [unknown]: 102

Georgia (99):
  Cherokee: 1
  Cobb: 3
  Fulton: 5
  Polk: 1
  [unknown]: 89

Hawaii (6):
  Honolulu: 1
  [unknown]: 5

Illinois (93):
  Cook: 7
  [unknown]: 86

Indiana (20):
  Hendricks: 2
  Marion: 1
  [unknown]: 17

Iowa (18):
  Johnson: 3
  [unknown]: 15

Kansas (8):
  Johnson: 1
  [unknown]: 7

Kentucky (20):
  Fayette: 1
  Harrison: 2
  Jefferson: 1
  [unknown]: 16

Louisiana (91):
  Jefferson: 1
  [unknown]: 90

Maryland (32):
  Harford: 1
  Montgomery: 4
  [unknown]: 27

Massachusetts (164):
  Berkshire: 1
  Middlesex: 7
  Norfolk: 6
  Suffolk: 8
  [unknown]: 142

Minnesota (35):
  Carver: 1
  Ramsey: 1
  [unknown]: 33

Missouri (5):
  St. Louis: 1
  [unknown]: 4

Nebraska (17):
  Douglas: 3
  [unknown]: 14

Nevada (24):
  Clark: 2
  Washoe: 2
  [unknown]: 20

New Hampshire (13):
  Grafton: 3
  Rockingham: 1
  [unknown]: 9

New Jersey (98):
  Bergen: 4
  Hudson: 1
  [unknown]: 93

New York (732):
  Nassau: 17
  New York: 19
  Rockland: 4
  Saratoga: 2
  Suffolk: 1
  Ulster: 1
  Westchester: 98
  [unknown]: 590

North Carolina (33):
  Chatham: 1
  Wake: 1
  [unknown]: 31

Oklahoma (7):
  Tulsa: 1
  [unknown]: 6

Oregon (36):
  Douglas: 1
  Jackson: 2
  Klamath: 1
  Marion: 1
  Umatilla: 1
  Washington: 8
  [unknown]: 22

Pennsylvania (66):
  Delaware: 1
  Montgomery: 5
  Wayne: 1
  [unknown]: 59

Rhode Island (20):
  Providence: 3
  [unknown]: 17

South Carolina (28):
  Charleston: 1
  Kershaw: 1
  Spartanburg: 1
  [unknown]: 25

Tennessee (39):
  Davidson: 1
  Shelby: 1
  Williamson: 1
  [unknown]: 36

Texas (72):
  Collin: 1
  Fort Bend: 6
  Harris: 6
  [unknown]: 59

United States Virgin Islands (1):
  St. Thomas: 1

Utah (28):
  Davis: 1
  [unknown]: 27

Vermont (8):
  Bennington: 1
  [unknown]: 7

Virginia (45):
  Fairfax: 2
  [unknown]: 43

Washington (643):
  Clark: 1
  Grant: 1
  Jefferson: 1
  King: 83
  Kittitas: 1
  Pierce: 4
  Snohomish: 31
  [unknown]: 521

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{}
	perStateOther := 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], ",") {
			state := record[colState]
			v := lastValue(record)
			if _, ok := perStateOther[state]; !ok {
				perStateOther[state] = 0
			}

			perStateOther[state] += v
			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
		v := lastValue(record)
		perState[geo.State.Name] += v
		perStateCounty[geo.State.Name][geo.County.Name] += v
	}

	// 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 {
		noCountySum := 0
		if v, ok := perStateOther[state]; ok {
			noCountySum = v - perState[state]
		}

		fmt.Printf("%s (%v):\n", state, perState[state]+noCountySum)
		for _, county := range countiesLookup[state] {
			fmt.Printf("  %s: %v\n", county, perStateCounty[state][county])
		}

		if noCountySum > 0 {
			fmt.Printf("  [unknown]: %v\n", noCountySum)
		}

		fmt.Println("")
	}

}

func lastValue(record []string) int {
	for i := len(record) - 1; i > firstDataColumn; i-- {
		v, err := strconv.Atoi(record[i])
		if err != nil {
			continue
		}

		if v == 0 {
			continue
		}

		return v
	}

	return 0
}