Ford was confronted with a potential swine flu pandemic. Vaccines are available for different kinds of swine flu. Experts agree hand-washing can help prevent viral infections, including ordinary and swine flu infections. Some authorities objected to calling the flu outbreak "swine flu". The COVID-19 pandemic is the most impactful pandemic since the Spanish flu in 1918. Alfonso became gravely ill during the 1918 flu pandemic. Frederick Trump died in the first wave of the Spanish flu pandemic. Tissue damage associated with pathogenic flu virus infection can ultimately result in death. Labels like "H1N1 flu", "Swine flu", "Mexican flu", and variations thereof were typical. Existing vaccines against seasonal flu provided no protection. And there are discussions about an order for a vaccine against Russian flu. An example sometimes cited is a subsidy for provision of flu vaccine. Health officials examined arrivals with flu symptoms. Officials in Taiwan suggested use of the names "H1N1 flu" or "new flu". Schools closed in many states in response to local flu outbreaks.