Emerging Viral Diseases Research Paper Example | Topics and Well Written Essays - 750 words

Emerging Viral Diseases - Research Paper Example The modification of the given genetic makeup of the host has also contributed to make them susceptible to diseases (Beltz 19). The disease causing viral agents have also modified their genetic makeup to increase their survival in the host’s system. Human behavior can also be attributed to the cause of the emergence and re-emergence of viral diseases. Human behavior such as urbanization, population increase, and migration lead to spread of diseases (Beltz 136). As people begin to occupy previously uninhabited areas, they get exposed to new environmental sources of infectious viral agents. Changes in food handling, storage, and processing by humans has also led to new spread (Beltz 145). Human advancement in bio warfare also increases the risk of contracting new and emerging disease threats. Ecological factors such as climate change have also led to emergence and re-emergence of new and old diseases (Beltz 162). Climate changes cause shifts in the geographical distribution of di sease causing agents and vectors. The shift in climatic conditions causes the agents to inhabit new regions causing diseases. Public health response to emerging and re-emerging diseases is vital in controlling and eliminating the threats of the viral agents. The response by public health organizations takes various forms. An enactment of global surveillance systems of the viral diseases is a vital response tool. These surveillance systems contain diagnostic and communication tools that detail disease spread plus its monitoring. Surveillance ensures that public health officials can map out the people affected by the viral disease spread, and how they can undertake their response to stop the disease spread (Beltz 256). Vaccination also presents a response by public health organs. The development of new drugs also gets carried out to nullify the effect of any emerging viral diseases (Beltz 258). The public health sector can also respond to emerging and re-emerging diseases by conductin g public health education. Health education is used as a vital tool to prevent disease spread among the public. Public health officials disseminate health messages concerning the diseases that get spread. The public health sector may also respond by initiating vector and zoonotic control (Beltz 270). Public health officials may employ the use or develop safe insecticides to trap the disease causing agents. The understanding of the reproductive cycle of HIV and other disease causing viruses is vital in stopping the spread of diseases. Infectious diseases can get prevented at a variety of points dependent on the infectious cycle of the diseases (Beltz 300). Understanding an infectious cycle of a virus is vital to allow for the identification of accessible targets for control strategies. The reproductive cycle of the viruses comes in handy in the development of drugs that alleviate their effect on the host’s body. Understanding the reproductive cycles of viruses ensures that sci entists can identify the points within their life cycles where the viruses are most vulnerable to intervention. This allows the scientists to develop tools such as vaccines and drugs that can fight of the spread of the disease causing viruses in the host’s body. Scientists get to design drugs that are more suppressive of the viruses and have fewer side effects on persons with disease. Understanding the life cycle of disease causing viruses also assists scientists to make predictions about the disease, and

Biological psychology essay Example | Topics and Well Written Essays - 2500 words

Biological psychology - Essay Example Seeing is a process which enables a person to see things of this world around him/her. To see is a natural God gifted phenomenon. One gets benefits and enjoys the environment. During this phenomenon, the patterns of light are projected on our retinas by the objects. From the scientific view, vision is a complex process. The image is encoded in the retina. The retina goes through some important processes and then reaches to the stage of recognizing an object or personality or anything else. Actually it is the object that reflects light from its background and the luminant boundaries in the retinal image are formed. This is a useful starting point in the spatial vision and is performed by an important group of retinal cells, the ganglion cells. (Jenkin, 1994) Spatial vision is that branch of psychology/biology that deals with the study of interpretation of light patterns on the retina by the visual system. This is a new interdisciplinary approach and is also called as vision sciences. This field of science integrates psychological, computational, neuro-scientific perceptions and the visual brain knowledge. Rods and cons of the eye are photoreceptor in nature and transduce light into electrical impulses inside our nerve fibers. Both types of cells are interdependent to each other. Not only a discrete area of human cognition is involved in spatial vision, but various other areas are also taking part in this two sided/faceted relation. The spatial perception influences and is influenced. (DeValois & Russell L., 1990) The field of visually perceived space introduces the knowledge of scientific psychology. In the current era, its importance is at a great rise. A keen interest is being shown by the biologists and psychologists. They are busy conducting an active research in this most important scientific knowledge. The visual space is usually described in terms of conscious experiences. Wagner (2006) stated that visual space is exposed by