NEW DELHI, June 8 — The World Health Organization announced here today that cholera had spread along the whole of the 1,350‐mile West Bengal‐East Pakistan border.

The regional office of W.H.O. said that the epidemic, which has killed thousands of East Pakistani refugees, had penetrated into West Bengal as far as Calcutta, 40 miles from the boundary.

Officials of the agency said in Geneva yesterday that at least 3,000 had died of cholera and gastroenteritis in West Bengal. Other estimates have put the figure as high as 8,000.

The total number of hospital cases reported by the Indian Government up to Sunday was 10,000.

The report today was issued as governments and charities throughout the world moved to provide food, medicine and clothing for the millions of refugees.

Britain has given $2.4‐million to the United Nations for aid, and the British Foreign Secretary, Sir Alec Douglas‐Home, pledged unlimited assistance.

The first of five Royal Air Force flights, with 75,000 pounds of supplies, was on its way to Calcutta. Sir Alec said that cholera vaccine and syringes for administering it and saline solutions would be provided.

Cholera, which is caused by bacteria in water or food contaminated by human waste, brings rapid dehydration from diarrhea. A victim may lose water at a rate of more than a quart an hour. Muscle cramps, hoarseness, shrunken skin, weakness, kidney failure, col lapse and death may follow. Saline solutions reverse the dehydration.

British charities have joined forces to speed the delivery of aid, and five of them — Oxfam, Christian Aid, War on Want, the Red Cross and the Save the Children Fund — began a nationwide campaign for funds.

The Red Cross in Geneva said that the Red Cross Societies of Belgium, Finland and Norway had responded to its urgent appeal with pledges of aid.

The West German Red Cross is sending tents, baby food and medical supplies; Canada is sending enough cholera vaccine for 20,000 Injections — the entire supply available to eastern Canada.

Danish aid organizations are sending about $220,000 in medical supplies. Thirty‐five tons of emergency supplies were flown from Copenhagen to Calcutta yesterday.

Japan today pledged $2.5‐ million in relief and Japanese officials heard a plea for further assistance.