Cut the squash in half and scoop out the seeds. Peel the squash and cut into 1 inch pieces. In a large pot, heat oil over medium heat. Add onion and garlic and cook, stirring often, until they begin to brown, about 5 minutes. Add the carrot, cumin, salt, and pepper. Cook for 1 minute, and then add squash, jalapeno pepper, and chicken stock. Bring to a boil, reduce heat and simmer for 15- 20 minutes, or until the vegetables are tender. Remove from the heat and puree the soup using an immersion blender, or transfer to a blender or food processor. Puree until smooth. Return to the heat, add the cream and adjust the seasonings. Serve with the shrimp salsa.