TayrcahakeCarole TayrcahakeCarole

21-05-2017
Biology

contestada

A flu vaccine is needed seasonally to be effective but a polio vaccine is only needed once. the best explanation of this is ________.

Respuesta :

mona82592 mona82592

21-05-2017

The flu has several strains that change seasonally

Answer Link

shockgamespvp shockgamespvp

21-05-2017

the flu virus code changes often as polio virus does not change at all.

Answer Link

Otras preguntas

Please answer below for 30 points and brainliest

What is 8% of 10 hours for telophase

HELP IM TIMED!!!!!!!!!!!!!!!! Question 1(Multiple Choice Worth 5 points) (MC) STORIES OF USEFUL INVENTIONS, excerpt By S. E. Forman 1911 THE MATCH There never

20 examples of electropositive radical

(5a-ab) (2ay-by)[tex] {2}^2( {2}^{4 - ?}5 {} ){?} [/tex]

What is the solution to -4(8- 3x) >6x - 8? A)x>-4/3 B)x<-4/3 C)x>4 D)x<4

Which letter represents the Eurasian Plate?

Identify the mistake in the solution below and explain how to correct it. Determine the correct answer. Algebra 3x - 5+ 3x = x + 8-x-1 6x – 5 = 2x + 7 4x - 5 =

Hey, I could use sm help with my question? plz and thxs :)

A mechanic charged $220. 28 to repair a car. The price included charges for 3 hours of labor and $126. 53 for parts. How much does the mechanic charge per hour