1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Rom4ik [11]
3 years ago
12

In 1937, a man employed to lay water pipes was found to be the source of a severe epidemic of typhoid fever. The man, an asympto

matic carrier of Salmonella enterica serotype Typhi, the bacterium that causes typhoid, habitually urinated at his job site. In the process, he contaminated the town’s water supply with bacteria from his bladder. Over 300 cases of typhoid fever developed, and 43 people died before the man was identified as the carrier.
Given that antibiotics were not generally available in 1937, how could health officials end the epidemic, short of removing the man from the job site?
Biology
1 answer:
ella [17]3 years ago
5 0

Answer:

They could lay new water pipes.

You might be interested in
As an infant, the ability to produce antibodies is
fiasKO [112]
A baby's immune system is not fully developed until he/she is about six months-old. In the meantime, pregnant mothers pass immunoglobulin antibodies from their bloodstream, through the placenta, and to the fetus. These antibodies are an essential part of the fetus's immune system. They identify and bind to harmful substances, such as bacteria, viruses, and fungi that enter the body. This triggers other immune cells to destroy the foreign substance.
4 0
3 years ago
Read 2 more answers
Light that has passed through a polarizing filter is called
julsineya [31]
Light that passes through a polarizing filter is called a vacuum.

6 0
3 years ago
Read 2 more answers
Some bed bugs had mutations in their genetic code which allowed them to survive the chemical pesticide and they produced chemica
Salsk061 [2.6K]

Answer:

Random mutations led to evolution of pesticide resistance genes in bed bugs.

Explanation:

Random mutations in genome of bed bug imparted them the pesticide resistance. Since the bed bugs having the mutation of pesticide resistance were able to survive under presence of pesticides, this variation was favored by natural selection. The bugs with pesticide resistance transmitted this trait to their progeny. In time, the bed bug population consisted of most of the bugs having the pesticide resistance.

8 0
3 years ago
Which of these is the direct result of an error in the transcription of a DNA nucleotide?
Inga [223]
What are the options
7 0
3 years ago
Read 2 more answers
3. Describe how increased carbon dioxide emissions can affect residents of<br> coastal regions.
Deffense [45]

Answer:

Coasts are sensitive to sea level rise, changes in the frequency and intensity of storms, increases in precipitation, and warmer ocean temperatures. In addition, rising atmospheric concentrations of carbon dioxide (CO2) are causing the oceans to absorb more of the gas and become more acidic.

3 0
2 years ago
Other questions:
  • Which of these explains why deletion of an imprinted gene can be a dominant mutation?
    8·1 answer
  • Please let me know as soon as possible
    7·1 answer
  • Phosphate from atp is removed to make adp and a free phosphate molecule
    8·1 answer
  • Advanced practice nurses earn less money than licensed practical nurses. Select one: a. True b. False
    8·1 answer
  • Write a procedure for an experiment that tests how a paper airplane's shape affects the distance it will fly. Then, describe how
    12·1 answer
  • How accurate is DNA and fingerprint technology, and when did it emerge? What level of human error still plays a role in this typ
    6·1 answer
  • Please help me ! I have a testtt
    7·2 answers
  • What is life?platinum grade​
    7·1 answer
  • 50 POINTS!!!!!
    14·2 answers
  • What are bacteria that can produce their own food without using the sun's energy called?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!