According to the World Health Organization, infectious diseases are defined as diseases caused by pathogenic microorganisms, such as viruses, bacteria, fungi or parasites; and diseases may or may not spread, directly or indirectly, from person to person. In fact, the transmission rate of infectious diseases is very high in Malaysia as Malaysia is a hot country with high humidity. Infectious diseases in Malaysia are transmitted via vectors, food or water, and contact with water. However, according to the Ministry of Health of Malaysia, the transmitted vector is one of the main transmission vectors in Malaysia compared to others because we cannot avoid the ubiquitous mosquito [1]. The three main diseases included in vector-borne diseases are dengue fever, malaria and Chikungunya (CHIKV) [1,2,3]. First of all, the recent statistics on dengue fever and deaths in Malaysia are ringing alarm bells across the country in these few years [1]. Dengue fever is usually transmitted by the Aedes mosquito. One gets infected with dengue fever from mosquito bite and will eventually have some signs and symptoms like frontal headache, retro-orbital pain, muscle pain, nausea and vomiting, joint pain, weakness, rash, anorexia, altered taste sensation and I have a slight sore throat. [1] If you experience such signs and symptoms, you should immediately consult your doctor and undergo treatment because dengue fever can cause death. A doctor or doctor usually performs some tests to determine whether the person infected with dengue fever such as hemagglutination inhibition (HI), complement fixation (CF), neutralization test (NT), immunoglobulin capture M (IgM) enzyme-linked immunosorbent assay (MAC-ELISA) and indirect immunoglobulin G ELISA. [1] Once… middle of paper… there are still many unknown problems for those infectious diseases due to the limitations of today's technology. For example, it is difficult to distinguish between dengue, malaria and chikungunya. Therefore, the government and other health professionals should take the responsibility to devote more effort to scientific studies to learn more about such infectious diseases so that the diseases can be cured. Apart from this, prevention is better than cure, therefore it is also important for the community to protect themselves from contracting such diseases. Works Cited1. Gubler, D. Dengue and dengue hemorrhagic fever. Clinical microbiology reviews. 1998;11(3):480--496.2. Singh B, Daneshvar C. Plasmodium knowlesi malaria in Malaysia. MED J Malaysia. 2010;65(3):166--72.3. Sam I, AbuBakar S. Chikungunya virus infection. Malaysian Medical Journal. 2006;61(2):264.