John Wood - Viruses in Our World

Published in 2020 by KidHaven Publishing, an Imprint ofGreenhaven Publishing, LLC 353 3rd Avenue Suite 255 New York, NY 10010 2020 Booklife Publishing This edition is published by arrangement with Booklife Publishing All rights reserved. No part of this book may be reproduced in any form without permission in writing from the publisher, except by a reviewer. Edited by: Kirsty Holmes Designed by: Amy Li Cataloging-in-Publication Data Names: Wood, John. Title: Viruses in our world / John Wood. Description: New York: KidHaven Publishing, 2020. | Series: Under the microscope | Includes glossary and index.

Identifiers: ISBN 9781534533257 (pbk.) | ISBN 9781534533271 (library bound) | ISBN 9781534533264 (6 pack) | ISBN 9781534533288 (ebook) Subjects: LCSH: Viruses--Juvenile literature. Classification: LCC QR365.W663 2020 | DDC 579.2--dc23 Printed in the United States of America CPSIA compliance information: Batch #BW20KL: For further information contact Greenhaven Publishing LLC, New York, New York at 1-844-317-7404. Please visit our website, www.greenhavenpublishing.com. For a free color catalog of all our high-quality books, call toll free 1-844-317-7404 or fax 1-844-317-7405. PHOTO CREDITS All images courtesy of Shutterstock. With thanks to Getty Images, Thinkstock Photo, and iStockphoto.

Front Cover Carlos E. Santa Maria, givaga, ananaline, Kateryna Kon, nechaevkon, Somboon Bunpray, espies, Supaleka_P, Master Images ananaline (Cellfred), givaga, FabrikaSimf (title and label masking tape), andy0man (paper texture), science_photo (petri dish borders) Konsan Loonprom. CONTENTS Words that look like THIS can be found in the glossary on page 24. WHAT ARE VIRUSES? Viruses are tiny that make people sick. Viruses make their home in cells. Viruses are very simple organisms. Viruses are very simple organisms.

In fact, they are so simple that nobody is sure whether they are alive or not! WHAT IS A MICROSCOPE? Microscopes are used to see very small things that cant be seen with just our eyes. There is a whole world of living things that would be to us without a microscope. use very powerful microscopes, like the one in the picture below. INFLUENZA Influenza known as the flu is a virus that can make someone very sick. They might cough and vomit, or have a sore throat. They might also have diarrhea (say: die-ah-ree-ah), which means runny poop! FLU CAN CAUSE A .

THIS MAKES A PERSON FEEL VERY HOT. person are breathed in by other people, spreading the virus. LET'S TURN THE PAGE AND LOOK UNDER THE MICROSCOPE! All living things make more of themselves. Animals have babies, while plants make seeds. Even , which are each made up of one cell, split in two. EBOLA Unlike the flu, Ebola doesnt spread through the air it spreads through touch.

If the virus enters the body, such as through the mouth or a cut, the person becomes infected. LET'S TURN THE PAGE AND LOOK UNDER THE MICROSCOPE! The body has a sort of alarm that tells it a virus is present and needs to be beaten. However, Ebola is dangerous because it doesnt set the alarm off. THE EBOLA VIRUS CAN LIVE ON DRY SURFACES, OR IN . , which can be fatal GOOD VIRUSES Not all viruses go after animals and humans. Some of them infect bad types of bacteria that can be harmful to other living things.

A virus that goes after bacteria is called a bacteriophage (say: bac-teer-ee-ah-fayge). There are more bacteriophages than any other virus in the world. They are found wherever bacteria are found, from the soil to the ocean. LET'S TURN THE PAGE AND LOOK UNDER THE MICROSCOPE! on the end. The tail joins on to a bacteria cell. The injected virus tricks the bacteria to make many more bacteriophages. The injected virus tricks the bacteria to make many more bacteriophages.

They make so many that the cell swells up and bursts. VACCINES Viruses can be hard to cure because they hide in our cells. Mostly we have to let our bodies deal with them. But there is a way to help our bodies. A vaccine is an injection of a weak form of a disease. Let's Turn The Page And Look Under The Microscope!