Recommended interim water receptacle treatment for exotic mosquitoes on international foreign fishing vessels arriving in Australia

This article was also published in Mosquito Bites in the Asia Pacific Region, Vol. 1 No. 2

Recommended interim water receptacle treatment for exotic mosquitoes on international foreign fishing vessels arriving in Australia

This article was also published in Mosquito Bites in the Asia Pacific Region, Vol. 1 No. 2.Exotic Aedes mosquito larvae are commonly found in receptacles as equipment or cargo that hold or have held water, on overseas vessels arriving in the Northern Territory (NT) of Australia. This applies especially to international foreign fishing vessels (IFFV) from Indonesia, which are commonly intercepted fishing in Australian waters by the Royal Australian Navy (RAN) and Customs and detained in Darwin or Gove harbours. The drinking water storage receptacles aboard these vessels are often found to contain Aedes aegypti and Aedes albopictus larvae. Drinking water storage receptacles are the most commonly detected type of container to carry exotic mosquito pupae, larvae and eggs into the NT. Aedes species eggs are desiccation resistant and can often be present in either water holding or dry receptacles. The eggs are laid just above the water level on the inner surfaces of receptacles. Approved procedures to treat drinking water receptacles only allow the use of chlorine, due to the residue concerns posed by the use of insecticides. These treatments are part of routine quarantine inspection and control procedures on vessels or aircraft in the 400 m quarantine zone around air and seaports

Imported malaria cases at the Northern Immigration Detention Facility, Berrimah, Northern Territory

There have been no endemic cases of malaria recorded in the Northern Territory (NT) since 1962, and in 1981 the World Health Organisation declared the whole of Australia to be malaria free.1 Due to favourable environmental conditions and the presence of competent vectors of the disease, the area north of the 19? parallel in the NT is considered to be receptive to the re-introduction of malaria.2,3 Small outbreaks involving local transmission have been recorded in Queensland in 1986 and 2002.4 These illustrate the potential for malaria to be re-introduced into North Australia, and the importance of monitoring all imported malaria cases. Cases of imported malaria are diagnosed in the NT every year and public health procedures are in place to manage these, including entomological investigations and control protocols.5,6 Entomological investigations are usually triggered if a malaria patient has infective stages (gametocytes) of the malaria parasite in the blood. A patient with gametocytes can potentially infect a vector mosquito which, in turn, could potentially transmit the parasite to another person. Entomological investigations involve analysing historical trapping data from any nearby routine adult trap sites, and setting adult traps at the case house and the nearest mosquito harbourage site. These determine the levels of potential malaria vectors present in the area.7 If high numbers of vectors are detected in the traps, and the patient has been exposed to mosquito bites, a precautionary fogging operation may be recommended. The aim of the fogging operation is to knock down any adult malaria vectors that may be infective, thereby preventing the development of a local malaria transmission cycl

Interim report to the National Arbovirus and Malaria Advisory Committee on the detection of exotic mosquitoes in tyres at Perkins Shipping, Darwin, Northern Territory on 12 May 2006

A Perkins container ship arrived in Darwin Harbour from Singapore on Wednesday 10 May 2006 and docked at the international wharf at Perkins Shipping at 04.30. An Australian Quarantine and Inspection Services (AQIS) officer conducted a pre-clearance inspection of the container ship on Thursday 11 May 2006. A quarantine inspection of the container ship was then conducted by AQIS on the morning of Friday 12 May 2006. During this quarantine inspection, mosquito larvae were found breeding in water pooling at the bottom of 6 large earthmoving tyres. The tyres were stacked upright, and protruding from the top of an open, uncovered shipping container

Recommended water receptacle treatment for exotic mosquitoes on foreign fishing vessels arriving in Australia

Exotic Aedes mosquito larvae are commonly found in receptacles as equipment or cargo that hold or have held water, on overseas vessels arriving in the Northern Territory (NT) of Australia. This applies especially to international foreign fishing vessels (IFFV) from Indonesia, which are commonly intercepted fishing in Australian waters by the Royal Australian Navy (RAN) and Customs and detained in Darwin or Gove harbours. The drinking water storage receptacles aboard these vessels are often found to contain Aedes aegypti and Aedes albopictus larvae. Approved procedures to treat drinking water receptacles only allow the use of chlorine, due to the residue concerns posed by the use of insecticides. These treatments are part of routine quarantine inspection and control procedures on vessels or aircraft in the 400 m quarantine zone around air and seaports

Recommended water receptacle treatment for exotic mosquitoes on foreign fishing vessels arriving in Australia

Exotic Aedes mosquito larvae are commonly found in receptacles as equipment or cargo that hold or have held water, on overseas vessels arriving in the Northern Territory (NT) of Australia. This applies especially to international foreign fishing vessels (IFFV) from Indonesia, which are commonly intercepted fishing in Australian waters by the Royal Australian Navy (RAN) and Customs and detained in Darwin or Gove harbours. The drinking water storage receptacles aboard these vessels are often found to contain Aedes aegypti and Aedes albopictus larvae. Approved procedures to treat drinking water receptacles only allow the use of chlorine, due to the residue concerns posed by the use of insecticides. These treatments are part of routine quarantine inspection and control procedures on vessels or aircraft in the 400 m quarantine zone around air and seaports.Date:2005-0

Imported malaria cases at the Northern Immigration Detention Facility, Berrimah, Northern Territory

There have been no endemic cases of malaria recorded in the Northern Territory (NT) since 1962, and in 1981 the World Health Organisation declared the whole of Australia to be malaria free.1 Due to favourable environmental conditions and the presence of competent vectors of the disease, the area north of the 19? parallel in the NT is considered to be receptive to the re-introduction of malaria.2,3 Small outbreaks involving local transmission have been recorded in Queensland in 1986 and 2002.4 These illustrate the potential for malaria to be re-introduced into North Australia, and the importance of monitoring all imported malaria cases. Cases of imported malaria are diagnosed in the NT every year and public health procedures are in place to manage these, including entomological investigations and control protocols.5,6 Entomological investigations are usually triggered if a malaria patient has infective stages (gametocytes) of the malaria parasite in the blood. A patient with gametocytes can potentially infect a vector mosquito which, in turn, could potentially transmit the parasite to another person. Entomological investigations involve analysing historical trapping data from any nearby routine adult trap sites, and setting adult traps at the case house and the nearest mosquito harbourage site. These determine the levels of potential malaria vectors present in the area.7 If high numbers of vectors are detected in the traps, and the patient has been exposed to mosquito bites, a precautionary fogging operation may be recommended. The aim of the fogging operation is to knock down any adult malaria vectors that may be infective, thereby preventing the development of a local malaria transmission cycleDate:2006-1

Recommended water receptacle treatment for exotic mosquitoes on foreign fishing vessels arriving in Australia

Exotic Aedes mosquito larvae are commonly found in receptacles as equipment or cargo that hold or have held water, on overseas vessels arriving in the Northern Territory (NT) of Australia. This applies especially to international foreign fishing vessels (IFFV) from Indonesia, which are commonly intercepted fishing in Australian waters by the Royal Australian Navy (RAN) and Customs and detained in Darwin or Gove harbours. The drinking water storage receptacles aboard these vessels are often found to contain Aedes aegypti and Aedes albopictus larvae. Approved procedures to treat drinking water receptacles only allow the use of chlorine, due to the residue concerns posed by the use of insecticides. These treatments are part of routine quarantine inspection and control procedures on vessels or aircraft in the 400 m quarantine zone around air and seaports