Vulnerability is highest for the elderly, pregnant women, individuals with underlying conditions, immune-compromised individuals  and young children. Regions without vector control programmes in place or without detection and treatment regimens. Inadequate insulation in housing in informal settlements in urban heat islands. Inadequate improvements in public health systems. Inadequate water and sanitation infrastructure, especially in rapidly expanding urban areas and informal settlements.
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report