Jonas Salk (1914-1995). For the first half of the 20th century, poliomyelitis, also known as infantile paralysis, was one of the most dreaded diseases to attack young people. By 1955 American physician and researcher Jonas Salk had developed a vaccine that almost eradicated the disease in the United States and other developed countries.
Jonas Edward Salk was born in New York City on October 28, 1914. He graduated from the City College of New York in 1934 and earned his doctorate in medicine from New York University's College of Medicine in 1939. While in medical school he had worked with Thomas Francis Jr. on killed-virus immunology studies. In 1942 he joined a group at the University of Michigan working on a vaccine against influenza. The vaccine was perfected in 1953.

In 1947 Salk became associate professor of bacteriology and head of the Virus Research Laboratory at the University of Pittsburgh School of Medicine. There he began working on the polio vaccine. Three viruses caused polio, and a vaccine had to be effective against all of them. By 1952 Salk had developed such a vaccine and conducted field tests on children. His findings were published in 1953, and a mass field test was done the next year.

On April 12, 1955, the vaccine was released for use in the United States. In 1957 Salk was named professor of experimental medicine at Pittsburgh, and in 1963 he went to San Diego as head of the Institute (later named the Salk Institute) for Biological Studies. In 1977 Salk was awarded the Presidential Medal of Freedom. He died on June 23, 1995, in La Jolla, California.

Answer the following question based on the Compton’s Encyclopedia Reading:

A. Dr. Salk did not have enough money to pay for his research and supplies

B. Dr. Salk has to create one vaccine that was effective against three different viruses

C. Dr. Salk had to convince government officials to allow him to test the vaccine

D. Dr. Salk’s idea for a vaccine was not supported by other scientist and physicians

Answers

Answer 1

Answer: B. Dr. Salk has to create one vaccine that was effective against three different viruses.


Related Questions

Does the text contain a vague pronoun reference? Whenever the Heberts visit New Brunswick, they see their relatives.

Answers

Answer:

no. it is clear the Herberts are visiting their relatives, not someone else's, in New Brunswick.

Answer: no I hope this helps

Write a simple sentence with one prepositional phrase. Highlight the prepositional phrase. plz help

Answers

Answer:

With a reusable tote in hand, Matthew walked to the farmer's market

Explanation:

Every prepositional phrase is a series of words consisting of a preposition and its object. In the example above, "with" is the preposition and "reusable tote" is the object.

Read the following excerpt and answer the question.

I have a dream that one day on the red hills of Georgia the sons of former slaves and the sons of former slave-owners will be able to sit down together at the table of brotherhood. I have a dream that one day even the state of Mississippi, a state sweltering with the heat of injustice, sweltering with the heat of oppression, will be transformed into an oasis of freedom and justice. I have a dream that my four little children will one day live in a nation where they will not be judged by the color of their skin but by the content of their character. I have a dream today.

Which statement best explains how the use of repetition in this excerpt makes it more effective?

a. It shows that King is from the South.
b. It shows that King condemns the South and not the North.
c. It shows that King is optimistic in the face of a very large task.
d. It shows that African Americans and white Americans share the same aspirations.

Answers

Answer: C

Explanation: He repeates “I have a dream” to show that he is optimistic about his dreams

There was a long line of people and all of the tellers were busy helping customers, many of whom were there to bank their paychecks. Use context clues to find the correct definition of the multiple-meaning word bank as it is used in this sentence. to deposit into an account a financial institution the side of the river to count on

Answers

Answer:

to deposit into an account

Explanation:

From the sentence given, "There was a long line of people and all of the tellers were busy helping customers, many of whom were there to bank their paychecks" the correct definition of the multiple-meaning word "bank" as it is used in the sentence is to deposit into an account.

Remember that the sentence said that people were in a long line and tellers were helping customers and that a majority of them were there to bank their paychecks which means they were there to deposit into an account.

Answer:

to deposit into an account

Explanation:

Why might someone want to implicate you with a certain group? QUICKKKK I NEED HELP FASTT ........

Answers

Answer:

You could have the intellect needed to be in that group, per say there was some kind of movie project for school and In order to make sure everything was done perfectly they separated you based on your knowledge. So if you were a person of knowledge who made wise decisions, you would be one of the very few people working on the cinematic. Sorry I can't think right now.

Explanation:

Plz answer my question



What phrase type is written in capital letters? 'We MIGHT BE TRAVELLING this weekend.'​

Answers

Answer:

Verb Phrase

Hope this helps..

Choose the correctly written sentence. To be successful in any field, perseverance must be maintained. To achieve success in any field, one must persevere. To achieve success in any field, perseverance must be maintained. None of the above

Answers

Answer:

To achieve success in any field, one must persevere.

Explanation:

اسلاميات
did u know the meaning of this word​

Answers

Answer:

I think the answer is Islamic

Explanation:

what does logos mean? (simple definition)

Answers

Logos is the reasoning or proof behind comparisons, analogies and studies.
Logos is easier known as the logic behind the text. That’s how I was taught to remember it

How is the last line of The Story of an Hour an example of dramatic irony? Question 3 options: a) "When the doctors came they said she had died of heart disease--of joy that kills." The doctors assume that Mrs. Mallard, who has a heart condition, died because she is shocked to see her husband alive and the joy of seeing him alive kills her. b) "When the doctors came they said she had died of heart disease--of joy that kills." Mrs. Mallard believes her husband is having an affair with Josephine. c) "When the doctors came they said she had died of heart disease--of joy that kills." Mrs. Mallard dies due to an asthma attack. d) "When the doctors came they said she had died of heart disease--of joy that kills." In reality, Mrs. Mallard did not actually die.

Answers

Answer:

D.

Explanation:

When the doctors came they said she had died of heart disease--of joy that kills.

If the CAPITALIZED word is incorrect, write the correct version of it in the answer below. If it is correct, write "correct." The ARMIE'S duty was to engage other armies.

Answers

Answer:

Correct

Explanation:

Its just correct

My answer to the question is

ARMIE'S is incorrect it is ARMIES.

2. Where in the story does Orwell use the rhetorical device of "unifying 2+2" as described in the Stanton video? How does
Orwell make the rhetorical device work?

Answers

Answer:

Orwell uses the rhetorical resource "unify 2 + 2" in the book "1984" to express the ease of the great powers in manipulating true concepts about some factor that forms society.

It makes this rhetorical feature work by showing logical and easily identifiable forms in the real world, of how government amnipulation can occur.

Explanation:

"Unifying 2 + 2" refers to the fact of bringing the truth back to society through reasoning and critical thinking. This refers to the ease of government powers in manipulating and modifying the truth of historical facts and concepts that shape society. Orwell uses this feature in a logical way showing easily identifiable situations in the real world that prove the need to unify 2 + 2.

is the connotation of the dog that bites people appropriate

Answers

No it is not it cannot

Imagine you are writing a formal argument to present, could be to your parents,
peers or professionals, what would you write an argument for and why?

PLEASE GIVE ME AN IDEA on WHAT KIND OF ARGUMENT I SHOULD DO!!!

Answers

You should write an argument on dress code for women if you believe it should be change or better school lunch funding

What is the literal meaning of "Nothing Gold Can Stay"? Write a brief summary of the poem (three to four sentences). Use examples from the text in your response.

Answers

Answer:

It means that nothing is permanent in life.

Explanation:

The literal meaning of "Nothing Gold Can Stay" is "nothing is permanent in life."

In the poem "Nothing Gold Can Stay" by Robert Frost, the poet explains the mortality of life and how nature itself fades and dies eventually. Here, nature is described as gold because it is very precious and beautiful.

Through the lines "Her early leaf’s a flower;  But only so an hour.", the poet says that even nature does not last forever but it is bound to fade away just like the Garden of Eden.

Answer:

The poem is about change and momentary existence. It says the green of spring is actually gold. This precious time is fleeting; it is Nature’s “hardest hue to hold.” This idea of not being able to hold on to things is repeated throughout the poem. The third and fourth lines of the poem discuss how a flower lasts only for a short time. In the final two lines, the poem discusses how dawn is brief before turning into day.

Explanation:

In the context of literature what is the meaning of word choice

Answers

Answer:

Word Choice. refers to a writer's selection of words as determined by a number of factors, including meaning (both denotative and connotative), specificity, level of diction, tone, and audience. Tone. Attitude a writer takes toward the audience, a subject, or a character. Analogy.

Explanation:

In terms of literature, choice refers to the writer's way of selecting words which are determined by several components such as tone, simplicity, audience etc.

What is literature?

Literature can be understood as any collection of written work, but it is also used more narrowly for writings specifically considered to be an art form, especially prose fiction, drama, and poetry. In recent centuries, the definition has expanded to include oral literature, much of which has been transcribed.

Literature is a method of recording, preserving, and transmitting knowledge and entertainment, and can also have a social, psychological, spiritual, or political role. Literature, as an art form, also includes works in various non-fiction genres, such as biography, diaries, memoir, letters, and essays.

Literature includes non-fictional books, articles or other printed information on a particular subject within its broad definition.

Learn more about literature, here:

https://brainly.com/question/28188697

#SPJ2

Is “make appointments” a prepositional phrase?

Answers

Answer: No.

Explanation: "make" isn't a preposition, it's a verb. so it's not a prepositional phrase.

Answer:

no

Explanation:

A colon is best used to connect two independent clauses when
Select one:
1.the second clause is an elaboration of the first clause.
2.the first clause is the cause and the second clause is the effect.
3.the first clause contains a list.
4.the second clause contains a quotation.

Answers

Answer: 4.the second clause contains a quotation.

Explanation:

Colons (:) are used in sentences to show that something is following, like a quotation, example, or list. A colon can be used to separate two independent clauses when a) the second clause is directly related to the first clause (not just vaguely related) and b) when the emphasis is on the second clause.

Answer:

1.   the second clause is an elaboration of the first clause.

Explanation:

Examples:

The local temperature where I live is quite high: in July it remained consistently in the 90 degrees range, which was an improvement on the current temperatures, which are stuck in the 100 degrees range.  

The purpose for answering your question is twofold: (1) to help you understand; and (2) to show you how "Brainly" I am.

What is a theme?(5 points)

Answers

Answer:A theme is not a summary of a piece of literature; it is a universal statement, moral lesson, message or idea that addresses the experience of being human. Themes are developed throughout a text and are expressed through different perspectives.

Explanation:

Answer:

THEME IS THE STORY LESSON LEARNED WHY THE WROTEN IT

Explanation:

Write a story about a problem that arose because of a
misunderstanding or a lack of communication.​

Answers

Real event 20/7/20

Nina: Russian culture is the worst, in some aspects.

Yuri: No, my culture is better than yours, the Spanish gave the diseases to the native Americans, and murdered them too.

Nina: So? Russians starved their own people, and burned down their own city.

Yuri: to avoid having it be stolen from them.

Me: c’mon guys... both of your cultures suck.

Yuri: shut up, Canada is the worst! They beat baby seals to death.

Nina: Yeah, if any culture is the worst, it’s yours!

Me: hey, I just tried to make it better, and not every Canadian beat seals. You guys are just nit picking.

Yuri: just shut up! You are the worst, both of you guys suck!

Nina: no Yuri, you suck!!

Me: guys, this is just one big misunderstanding.

Yuri: whatever, I know what she said, she said “Russian culture is the worst!”

Nina: then I said “In some aspects”

Yuri: *pauses and thinks back* ohhhh... sorry haha...

Nina: lol

Me: hehe... he... oh well... I gotta go... bye!

Nina: bye!

Yuri: bye bye senpai lol

(Hope this help you ♥︎)

what is supense in a story

Answers

Answer:

Explanation:

It is the intensity of the story. Basically how intense it gets

WILL GIVE BRAINLLLLIEESTTTTTT!!!!!!!!!!! Pls don't use google or any browser. Use ''Disparities'' in a sentences

Answers

Answer:

The disparites between the shoe's is that one shoe is larger than the other one.

Explanation:

Disparities means a great difference.

The disparities in orange juice and apple juice is color. Orange juice is orange while apple juice is golden.

Which phase best describes how Levi is characterized in this passage

Answers

Answer:

nonexistent

Explanation:

We can't answer the question if we dont know what its about

which of the following would not affect self-image?

Answers

Answer:

What are the "Following"??? Is it a multiple choice??

Explanation:

When you post the multiple choice questions Ill come back and edit my answer and help you XD!!!

Which sentence best describes how the narrator point of view affects the story?

Answers

Answer:

we need the whole story to help you

Explanation:

hello

Im really confused on how period 1 period 2 and so on works in highschool. And how semester works.


Thx!

Answers

Answer: you have 7 periods in a day (This wont be true for all school, but true for most) each period is a different class. period 1 is your first class and period 2 is your 2nd class. There's 2 semesters in a school year.  1st semester is August - December. Then there's winter break. 2nd semester is January - May

Explanation:

Whats the difference between a run-on and a comma spice ?

Answers

Answer:

Whats the difference between a run-on and a comma spice ?

Explanation:

he run-on sentence and comma splice are common punctuation errors that can create confusion in your writing.  

Run-on sentence

A run-on sentence occurs when two or more complete sentences (independent clauses) are joined with no punctuation. Here's an example:

Comma splice

A comma splice occurs when two or more complete sentences are joined only with a comma, which is not strong enough punctuation.  This is an example of a comma splice:

what do these archetypes say about the cultures from which they come from?

Answers

Answer:

Your question is incomplete as you did not provide the options to answer it. But anyway I will give you an explanation so that you can understand this topic and can answer it for yourself.

Explanation:

An archetype represents that which is exemplary, that which shows the ideal or what it should be, that is, a model, from which other ideas, concepts, objects or copies emerge. It can be something tangible or intangible (symbolic), but it always has the ability to generate other things from itself.

That is why we conclude that what an archetype can say about the culture from which it comes are behaviors and even ways of thinking, since the environment seeks imitation or similarity to what is shown as ideal.

What makes a nation?

Answers

A nation is a stable community of humans formed on the basis of a common language, territory, history, ethnicity, or psychological make-up manifested in a common culture. A nation is more overtly political than an ethnic group
(On google)

Read the sentence from Barrio Boy by Ernesto Galarza. Any neighborhood courtesy—an exchange of a banana for a red pepper, or the return of a borrowed utensil—was sure to pass through our messenger system. Which words have a connotative meaning in the sentence? Any neighborhood red pepper borrowed utensil messenger system

Answers

Answer:

Its D. Messenger system.

Explanation:

Just took the test and its correct!

Answer:

It's D. Messenger system.

Explanation:

Just took the test and it's correct!

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Students have after-school jobs for many reasons. They can earn money to buy things they want. Which sentence creates the best transition to link the claim and its support? A) Students have after-school jobs for many reasons because they can earn money to buy things they want. B) Because students have after-school jobs for many reasons, they can earn money to buy things they want. C) Students have after-school jobs for many reasons, although they can earn money to buy things they want. D) Students have after-school jobs for many reasons; for example, they can earn money to buy things they want. What are the four pillars of capitalism? Consider the following sentence: In order to swim for an hour, Paolo must take time away from work, where he earns $11 per hour. This is in addition to paying a $4 entrance fee for the pool. Which basic principle of individual choice do these statements best illustrate? I need this urgently anyone knows this? In a statement of cash flows, the sale of a long-term investment would ordinarily be classified as:_____.a. an operating activity.b. a financing activity.c. an investing activity.d. a lending activity. It is our social responsibility to ensure respect for human rights The motors that drive airplane propellers are, in some cases, tuned by using beats. The whirring motor produces a sound wave having the same frequency as the propeller. Part A If one single-bladed propeller is turning at 574 rpm and you hear a 2.50 Hz beat when you run the second propeller, what are the two possible frequencies (in rpm) of the second propeller? f1,f2 = Part B Suppose you increase the speed of the second propeller slightly and find that the beat frequency changes to 2.60 Hz . In part (A), which of the two answers was the correct one for the frequency of the second single-bladed propeller ? Part C How do you know the answer in part (B) to be correct? Explain. Masses m and 2m approach each other at the same speed v and collide head-on. Find the final speed of mass 2m, if mass rebounds at speed 2v. g "The principle stating that asset and liability measurements should be based on the amount given or received in the original transaction is referred to as the" While Andrew Jackson was president, American Indians were forced to walk long distances in harsh conditions to land the government had set aside for them. Which cause or effect statement is true about this time? A. Conflicts between European Americans and American Indians arose because Jackson was a hero of the common people. B. The Trail of Tears marked the first significant hostile exchange between European Americans and American Indians. C. Jackson appointed his friends to the Bureau of Indian Affairs, and it was those friends who passed the Indian Removal Act. D. A series of conflicts between European Americans and American Indians led to this situation, and more such conflicts would follow. An outdoor spa (hot tub) draws 1504 watts to keep the water warm. If the utility company charges $0.14 per kilowatt-hour, how much does it cost to operate the spa for four months during the winter (24 hours per day)? Assume each month has 30 days. What is the value of the expression?10+|5+2|A. 3B. -17C. -3D. 17 On January 2, 20X4, West Co. issued 9% bonds in the amount of $500,000, which mature on January 2, 20X24. The bonds were issued for $469,500 to yield 10%. Interest is payable annually on December 31. West uses the interest method of amortizing bond discount. In its June 30, 20X4, balance sheet, what amount should West report as bonds payable? Which of the following is the most likely to occur if the temperature of seawater decreases?A. The speed of sound will decrease due to the decreasing salinity of seawater.B. The speed of sound will increase due to the increasing density of seawater.C. The speed of sound will decrease due to the increasing density of seawater.D. The speed of sound will increase due to the decreasing density of seawater. List five things that you have noticed about the profession of pharmacy and/or a particular pharmacist that makes you feel that the trust is warranted. David is preparing a presentation on art history. Complete the sentence to help David describe a significant change in Christian art. I need helpp thxxxxx 3(x2 + x + 2) +5(x-4) what is the primary reason that past federal wildfire management policy emphasized suppression Which statement summarizes the social contract described by John Locke and Jean-Jacques Rousseau? A. Governments promise tolerance in exchange for unquestionable loyalty. B. People surrender some of their natural rights in exchange for the common good. C. People pledge their lives in exchange for the government's promise to refrain from force. D. Governments pledge to compete with other governments for resources.