Which of the following scientists is credited with the development of the first successful polio vaccine? [#1300]

Jonas Salk developed the inactivated poliovirus vaccine (IPV) in 1955, which was the first effective vaccine against polio. Salk's vaccine led to a significant reduction in polio cases and paved the way for global efforts to eradicate the disease.

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Jonas Salk developed the inactivated poliovirus vaccine (IPV) in 1955, which was the first effective vaccine against polio. Salk's vaccine led to a significant reduction in polio cases and paved the way for global efforts to eradicate the disease.

The antecedent is the word or phrase that a pronoun replaces or refers to, often found earlier in the text or sentence.

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The antecedent is the word or phrase that a pronoun replaces or refers to, often found earlier in the text or sentence.

Knockdown and Knockout are the terminology of boxing. A knockdown happens when a boxer tumbles to the ground of the boxing ring as a result of a blow from the rival. A knockout is an automatic win for the opponent, and refers to a player being knocked down for more than 10 seconds. The referee will start counting down from 10 once a player has been knocked down, and the player has to regain his position in order to continue the round.

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Knockdown and Knockout are the terminology of boxing. A knockdown happens when a boxer tumbles to the ground of the boxing ring as a result of a blow from the rival. A knockout is an automatic win for the opponent, and refers to a player being knocked down for more than 10 seconds. The referee will start counting down from 10 once a player has been knocked down, and the player has to regain his position in order to continue the round.

Integers

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Integers

The object is the word or phrase that receives the action of the verb, and can be a noun, pronoun, or phrase.

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The object is the word or phrase that receives the action of the verb, and can be a noun, pronoun, or phrase.

Economic liberalization in India was initiated in 1991. The reforms were introduced in July 1991 by the minority government of Prime Minister P.V. Narasimha Rao and Finance Minister Dr. Manmohan Singh. The reforms were a response to a balance of payments crisis and were part of an International Monetary Fund (IMF) program.

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Economic liberalization in India was initiated in 1991. The reforms were introduced in July 1991 by the minority government of Prime Minister P.V. Narasimha Rao and Finance Minister Dr. Manmohan Singh. The reforms were a response to a balance of payments crisis and were part of an International Monetary Fund (IMF) program.

Isaac Newton is widely credited with the discovery of gravity and formulated the laws of motion that bear his name.

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Isaac Newton is widely credited with the discovery of gravity and formulated the laws of motion that bear his name.

The Chail Cricket Ground in Himachal Pradesh is the highest cricket ground in the world, sitting at 2,444 meters (7,500 feet) above sea level. Built in 1893 by the Maharaja of Patiala, Bhupinder Singh, the ground is also used for polo.

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The Chail Cricket Ground in Himachal Pradesh is the highest cricket ground in the world, sitting at 2,444 meters (7,500 feet) above sea level. Built in 1893 by the Maharaja of Patiala, Bhupinder Singh, the ground is also used for polo.

Morarji Desai was the 4th PM (1977-1979) of India. He was the second deputy prime minister of India. He was the first non-congress Indian Prime Minister. He is the only Indian who received the highest civilian awards from both India and Pakistan, the Bharat Ratna and Nishaan-e-Pakistan.

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Morarji Desai was the 4th PM (1977-1979) of India. He was the second deputy prime minister of India. He was the first non-congress Indian Prime Minister. He is the only Indian who received the highest civilian awards from both India and Pakistan, the Bharat Ratna and Nishaan-e-Pakistan.

The Inca Empire built an extensive road network that connected their vast territory, stretching from modern-day Colombia to Chile.

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The Inca Empire built an extensive road network that connected their vast territory, stretching from modern-day Colombia to Chile.

The Shore Temple is a complex of temples and shrines that overlooks the shore of the Bay of Bengal. It is located in Mahabalipuram, about 60 kilometres (37 mi) south of Chennai in Tamil Nadu, India.

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The Shore Temple is a complex of temples and shrines that overlooks the shore of the Bay of Bengal. It is located in Mahabalipuram, about 60 kilometres (37 mi) south of Chennai in Tamil Nadu, India.