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CDC has updated the estimated range maps for Ae. aegypti and Ae. albopictus mosquitoes by using a model that predicts possible geographic ranges for these mosquitoes in the contiguous United States. The model used county-level records, historical records, and suitable climate variables to predict the likelihood (very low, low, moderate, or high) that these mosquitoes could survive and reproduce if introduced to an area during the months when mosquitoes are locally active.

The Asian tiger mosquito can carry dread diseases like Zika, and yellow and dengue fever. After it vanished from Palmyra Atoll, an island in the tropical Pacific, USGS researchers and partners set out to find out why.

See also: Dengue - Mosquito Control for more resources

An emerald ash borer (EAB) beetle was detected in a tree located in Londonderry, VT. The mapped area in Vermont [PDF, 1.25 MB] to which "Slow-the-Spread" recommendations apply now covers:

• All of Londonderry, Windham, and Landgrove;
• Most of Jamaica, Winhall, Peru, Weston, Andover and Grafton; and
• Extends into Chester, Townshend, Stratton, Athens, Mount Tabor, and Wardsboro.

October means that non-flight season Recommendations to Slow the Spread of Emerald Ash Borer are now in effect when moving ash from the infested area. With the heating season underway, and firewood deliveries actively occurring, it’s important to remember that untreated ash firewood should never move out of infested areas. Be sure that your purchase or transportation of both log length and split firewood will not unnecessarily spread EAB. There’s a lot of spread to slow: While the infested area map shows that high-risk areas for EAB include many towns, visibly infested trees still remain rare in Vermont. You can help by following the "Slow-the-Spread" recommendations.

In October 2016, the European Parliament and the Council adopted Regulation (EU) 2016/2031 on protective measures against plant pests (“Plant Health Law”). On 13 December 2016, the Regulation entered into force and will be applicable from 14 December 2019. The new rules aim to modernise the plant health regime, enhancing more effective measures for the protection of the Union's territory and its plants. The Plant Health Law increases the prevention against the introduction of new pests via imports from third countries. Commission Implementing Regulation (EU) 2018/2019 establishes the list of high risk plants the introduction of which into the EU territory will be provisionally prohibited from 14 December 2019 until a full risk assessment has been carried out. Published in the Official Journal on 11 October 2019, the Commission Delegated Regulation (EU) 2019/1702 lists 20 quarantine pests as priority pests, including Xylella fastidiosa, the Japanese beetle, the Asian long-horned beetle, Citrus greening and Citrus Black Spot, whose economic, environmental and social impact on EU territory is the most severe.