Arthropda vectors are responsible for disease transmission of the following diseases EXCEPT:

 # Arthropda vectors are responsible for disease transmission of the following diseases EXCEPT:

A. Malaria and Yellow fever

B. Typhus fever and Rocky mountain fever

C. Dengue fever and Japanese encephalitis

D. Diphtheria and tetanus

The correct answer is D. Diphtheria and tetanus.

The primary vectors for malaria are female mosquitoes of the Anopheles genus. Among the various species of Anopheles mosquitoes, Anopheles gambiae, Anopheles funestus, and Anopheles stephensi are particularly important in the transmission of malaria. These mosquitoes can carry and transmit the Plasmodium parasites, which cause malaria in humans.

The primary vector for yellow fever is the Aedes aegypti mosquito. This mosquito species is also known to transmit other diseases such as dengue, chikungunya, and Zika virus. Yellow fever is caused by the yellow fever virus (YFV), and the Aedes aegypti mosquito becomes infected when it bites a person already infected with the virus.

Typhus fever is a group of infectious diseases caused by different species of Rickettsia bacteria. The bacteria are transmitted to humans through the bite of infected arthropods, primarily body lice in the case of epidemic typhus.

American dog tick (Dermacentor variabilis) and Rocky Mountain wood tick (Dermacentor andersoni) are the primary vectors for Rocky Mountain spotted fever (caused by Rickettsia rickettsii).

Dengue fever is caused by the dengue virus, which is transmitted to humans through the bite of infected Aedes mosquitoes. Dengue is a significant public health concern in many tropical and subtropical regions.

Japanese encephalitis is caused by the Japanese encephalitis virus, which is transmitted to humans through the bite of infected Culex mosquitoes. It is a mosquito-borne viral infection prevalent in parts of Asia.

Diphtheria and tetanus are not transmitted by any vectors such as insects or animals.