The number of people diagnosed with coronavirus in the US has risen to more than 189,000, according to Johns Hopkins University.

At least 4,099 people in the US have died from the virus as of 1 April, according to global Covid-19 data collected by the university.

The latest numbers come after Donald Trump declared a national emergency over the deadly virus, believed to have originated in a market in Wuhan, China.

Governors in states across the country have declared states of emergency, with New York City closing nightclubs and mandating restaurants to takeout only as the vast majority of residents have been sent home from school and work to self-isolate in their homes.

The CDC released guidelines urging Americans to cancel all events with more than 50 people, as more than 30 states closed schools. The global death toll has meanwhile surpassed 44,000.

Figures are gathered from both local and state health agencies, and include presumptive positives that have not been confirmed by the Centres for Disease Control and Prevention.

The figures also include three people repatriated from Wuhan, China; 46 people repatriated from the Diamond Princess cruise ship in Japan; and 21 from the Grand Princess cruise ship that was allowed to dock in Oakland, California.

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​1 April

Cases: 189,886

Deaths: 4,100

31 March

Cases: 175,000

Deaths: 3,145

30 March

Cases: 140,904

Deaths: 2,405

25 March

Cases: 54,453​

Deaths: 737

24 March

Cases: 44,183

Deaths: 544

20 March

Cases: 15,219

Deaths: 201

19 March

Cases: 10,000

Deaths: 150

18 March

Cases: 7,000

Deaths: 117

17 March

Cases: 5,000

Deaths: 94

16 March

Cases: 3,500

Deaths: 69

13 March

Cases: 2,174

Deaths: 47

12 March

Cases: 1,697

Deaths: 41

11 March

Cases: 1,301

10 March

Cases: 994

9 March

Cases: 704

8 March

Cases: 541

7 March

Cases: 435

6 March

Cases: 319

5 March

Cases: 221

4 March

Cases: 158

3 March

Cases: 124

2 March

Cases: 100

1 March

Cases: 75

​29 February

Cases: 68

28 February

Cases: 63

27 February

Cases: 60

26 February

Cases: 60

25 February

Cases: 57

24 February

Cases: 53

23 February

Cases: 35

22 February

Cases: 35

21 February

Cases: 35

20 February